A PowerPoint which introduces the ‘Doubling-and-Halving Strategy for Multiplication’.
This PowerPoint uses an array to show the multiplication strategy of doubling one factor and halving the other factor to help to work out some multiplication problems. Doubling and halving is therefore related to thinking that ‘restructures’ an array to make it more manageable to multiply (e.g. 3 × 18 = ___ can be rewritten as 6 × 9 = ___).
Very visual resource which helps students see that the total number of circles in an array (the product) stays the same when an array is cut and rearranged.
No text: so recommend that the teacher walks through the first couple of example slides and then students verbally explain the following examples to their peers.
Order of animations:
Tricky array and sum is shown.
Confused smiley bounces in. (explain here that if you don’t know your 15 times table etc. this could be hard)
Scissors appear and cut the array - array restructures into simpler array (double of one factor/half of the other)
New corresponding sum appears - click & answer is shown
Array restructures to first formation and tricky sum is shown again
As the total number of circles has remained the same throughout the sequence the answer should be obvious :-)
I use it alongside other strategies so that it is presented as an option for mental computation involving multiplication.
4 times multiplication with double-double strategy. To help learn four times table.
Highly visual, interactive slides with arrays of dots, hundred squares, input-output machine, step counting, and various sum flashcards.
PowerPoint activity/presentation progressing in this slide order:
Counting in steps of four up to 100 from 0.
100 square count in steps of four with pattern being revealed (3 secs each step).
100 square count in steps of four with pattern being revealed (2 sec each step).
100 square count in steps of four with pattern being revealed (1 sec each step).
Double Double Machine (with reinforcemnt of relationship x4)
4 times table in order with array
4 times table in order with no array
4 times table out of order with array
4 times table out of order with array (24 questions)
4 times table - see answer - give sum, out of order, no array, 24 questions
Includes differentiated double-double worksheets
Made for my grade 3 class who are just starting to formally learn their times-tables.
Highly visual, interactive slides with arrays of dots, hundred square, step counting, various sum flashcards, animated finger trick illustration, and slides showing some of the patterns for the nines times table.
PowerPoint activity/presentation progressing in this slide order:
Counting in steps of nine up to 216 from 0.
100 square count in steps of nine with pattern being revealed (1.5 seconds each step).
9 times table in order with array
9 times table in order with no array
9 times table out of order with no array - 12 questions
9 times table out of order with no array - 24 questions
9 times table - see answer - give sum, out of order, no array, 12 questions
9 times table in order with finger trick
Animated slide that shows that the digits of the answers to nines times table sums always add upto 9.
Animated slide that shows that the tens digit goes up by one, and the ones digit goes down by one when the nines times table is recited in order.
With PDF to support 8) and 9) above.
Position, direction and movement, anti-clockwise, clockwise, fractions of turns
*Review clockwise and anti-clockwise turns by means of animated images of clocks and 11 other fun animated revolving images.
*Learn quarter, two-quarter/half, three-quarters and four-quarters/whole fractions of a circle
*simple following instruction game to review clockwise and anti-clockwise quarter, half, three-quarter and whole turns prior to or after watching a birds-eye animated image of a man standing on a divided circle making animated turns.
*In pairs practice turning a pencil clockwise and anti-clockwise quarter, half, three-quarter and whole turns prior to or after viewing an example.
PowerPoint whole-class teaching resource
Two page worksheet (in word & PDF format) using the same pencil turns image to consolidate learning.
Grid method multiplication introduction worksheets. Using grid method to multiply a 2 digit number by a 1 digit number.
Differentiated grid method multiplication worksheets.
Please also see https://www.tes.com/teaching-resource/grid-method-arrays-place-value-to-multiply-with-arrays-11579635 which includes these worksheets with a PowerPoint and a few more worksheets.
Doubling and halving using partitioning for 2, 3, & 4 digit numbers.
Doubling and halving frames differentiated worksheets.
Doubling related to multiplying by 2 and halving related to dividing by 2 with matching sum.
Includes blank versions for further differentiation.
Includes x2 times table PowerPoint with numerous animated slide pages, 1 page of which represents x2 as doubling.
Pi Day / Math Day lesson activity.
Challenge your students to work out the mystery magic number and/or to use the given magic number to answer the questions
Mystery Magic Number Worksheets
Most of the answers to the questions on the worksheet are correct. However, 4 answers are wrong - colour these incorrect answers/boxes red. Use the 11 correct clues to work out the magic number.
When you think you know the magic number write it in the star.
Finally, using the magic number work out the answers to the 5 questions on the bottom row.
11 differentiated worksheets with answer sheets given.
Use the Given Magic Number to answer the questions worksheets
4 differentiated worksheets - teacher or learner writes a magic number in the star;then answer the 20 questions below using the magic number.
Differentiated Worksheets for Divide a 2-digit number by a 1-digit number - flexible partitioning
This set of worksheets provides scaffolded practice for students learning to divide 2-digit numbers by 1-digit numbers without regrouping. The worksheets are organized into 2 lessons/steps:
Step 1 - Divide a 2-digit number by a 1-digit number - no exchange
Step 2 - Divide a 2-digit number by a 1-digit number - flexible partitioning
The worksheets in each step use part-whole models, and are differentiated into 3 levels (with chili peppers):
Completely partitioned
Partially partitioned
Unpartitioned
This differentiation allows students to progress from more structured practice to independent partitioning as their division skills develop.
The 16 worksheets focus on familiar divisors like 2, 3, 4, and 8. These worksheets are ideal for building 2-digit division skills in Year 3. The scaffolding and progression help meet the needs of learners at various levels.
Another great year 3 resource for the next step in division: Divide a 2-digit number by a 1-digit number - with remainders
Differentiated worksheets to help with connecting division and multiplication.
Arrays hidden behind a clue - 3 levels LA x2 facts / MA x2,x3,x4 facts / HA x3,x4,x6,x9 facts.
colour match worksheets - fill in each fact. Then use the same colour to show the number facts that belong in the same family. All fact families from x2 to x10.
Three times table multiplication worksheets.
Differentiated three ways.
Three times table trick worksheets with arrays.
Skip counting by 3s worksheets with hundred square, groups of dice, skip counting practice.
Inverse multiplication division for fours facts and eights facts.
Division as inverse of double-double (dividing by 4) and halve, halve, halve (dividing by eight).
Also with input-output table worksheet to use with ones blocks for 3’s and 4’s facts.
Plus multiplication - division colour matching for all facts.
Differentiated worksheets (LA/MA/HA)
Differentiated Worksheets for Subtracting Across Tens in Three-Digit Numbers
Help your Year 3 students confidently subtract across tens in three-digit numbers with this set of differentiated worksheets. Aligned with the White Rose Maths scheme (Year 3 | Autumn term | Block 2 – Addition and subtraction | Step 8: Subtract 1s across a 10), these worksheets are perfect for supporting a structured learning progression with mental subtraction.
This resource includes:
6 progressive levels of worksheets, each level designed with 2 A4 sheets.
Part-whole models and number lines included to provide structured visual support.
Levels are cleverly designed to gradually reduce visual aids, encouraging independent mental maths subtraction thinking.
Versions with and without chilli pepper level indicators for flexible use.
Ideal for students needing support at different levels of understanding, these worksheets will help build confidence and fluency in subtraction.
Follows on from: Add tens across a hundred
and Add ones across a ten
Next Step Subtract 10s across a 100 Worksheets
Differentiated Worksheets for Subtracting Tens Across Hundreds in Three-Digit Numbers
Boost your Year 3 students’ confidence in subtracting across hundreds with this comprehensive set of differentiated worksheets. Aligned with the White Rose Maths scheme (Year 3 | Autumn term | Block 2 – Addition and subtraction | Step 9 / Subtract 10s across a 100), these resources support structured learning progression in mental subtraction.
Key Features:
8 progressive difficulty levels, each with 2 A4 worksheets
Visual aids including part-whole models and number lines with and without jumps shown
Gradual reduction of visual support to encourage independent mental math skills
Versions with and without chilli pepper difficulty indicators for flexible use
This resource pack includes:
16 worksheets (2 per level) designed to build skills systematically
2 BONUS Worksheets - number track subtracting by tens - 2 levels
Ideal for:
Differentiated instruction in whole-class settings
Small group interventions
Independent practice or homework assignments
Help your students develop confidence and fluency in subtraction across hundreds while catering to diverse learning needs. Perfect for classroom use, homeschooling, or additional practice.
Related White Rose Maths Steps practice worksheets:
Step 6: Add 1s across a 10 resource
Step 7: Add 10s across a 100 worksheets
Step 8: Subtract 1s across a 10 worksheets
Made for my grade 3 class who are just starting to formally learn their times-tables.
Very visual resource using arrays with dots, hundred charts, step counting and various sum flashcards.
PowerPoint activity/presentation progressing in this slide order:
Counting in steps of two up to 120 from 0.
Count to 24 in steps of 2 with array being built.
100 square count in steps of two with pattern being revealed (2 sec each step).
100 square count in steps of two with pattern being revealed (1 sec each step).
Double the number with numbers in random order (doubling function in-out machine design).
2 times table with sum and array in order.
2 times table with sum and array turnaround in order.
2 times table with sum but no array
2 times table with sum and array out of order.
Answer shown and student to give sum.
Also included are the x0 and x1 timetables. Often overlooked when teaching multiplication, but essential to grasping a true understanding.
First slide is ‘times zero’ times table and shows a fixed golden zero with sum twisting in and out.
Emphasizing the rule that;
“When you multiply a number by zero, the answer is always zero”
Second slide is ‘times one’ times table and shows the multiplicand (the number being multiplied) emerging from itself and sliding over to the product (the answer)
Emphasizing the rule that;
“Any Number Times One is that Number / 1 x anything = itself”
Three rimes table trick with arrays to help with the three times table multiplication strategy .
This clear, step-by-step and helpful PowerPoint will help students learn that multiplication by 3 can be done by doubling and adding another set.
e.g. to calculate 3 × 14:
first double 14 getting 28, then add another 14, (to get 3 times 14) which is 42.
21 Examples are presented (from 3 x 2 up to 3 x 21) in order, or from a hyperlink menu.
Each slide shows the sum and a confused face,
Then two lines of the matching array (showing the doubling array)
Then another set (another line of the array) is added
Whilst the matching thought process is shown with clear sums.
Finally everything apart from the x3 sum and array dissolve out, leaving just the sum, the answer and the x3 array.
Each part of the thought multiplication strategy is presented when you click the mouse, giving students time to work out and explain each step.
Includes 3 level differentiated mathcing sylte worksheets and skip counting x3 worksheets.
Also see my Multiplication Strategies pack which includes this trick and other common multiplication strategies
https://www.tes.com/teaching-resource/mental-multiplication-strategies-11756501
Includes 11 multiplication resources
Mental Multiplication Strategies = for multiplying by x2/x3/x4/x5/x8/x9/x0/&x1
Using Place Value to Multiply with Arrays PowerPoint
Doubling and Halving Strategy to Multiply PowerPoint
Nine times table tricks and patterns
Division and Multiplication / Combining and Sharing Objects
Division - Think Multiplication Strategy
Also added a cool multiplication wheels powerpoint
plus some editable speed maths worksheets and multiplication certificates.
Some of my best multiplication resources. I have found them extremely useful and clear to help students gain a deeper understanding of multiplication knowledge and skills.
Think Addition Strategy to do Subtraction mental math 2 Presentations & 8 Worksheets -
Think-addition-to-do-subtraction is a mental math strategy that introduces students to the concept that there is an inverse relationship between addition and subtraction. You think of an addition fact in the same fact family. For example, you can solve 10 - 4 = ? by thinking 4 + ? = 10 and knowing that 4 + 6 = 10.
I made these two PowerPoints to help my grade 3 class (ages 8 & 9) with the think-addition strategy. Many of my students this year are slow to recall number-bond facts, and therefore this has hopefully helped them to see the inverse relationship between addition and subtraction. Could well be used in earlier grades.
1 PowerPoint of 25 sums with matching circles being added and taken away: mainly for subtraction sums between 10-20, but also has 4 slides for facts to 10.
Slides can of course be hidden and order rearranged.
2nd PowerPoint of 20 larger sums with no circles: variety of examples within 100.
Comes with seven subtraction think addition worksheets in PDF format of increasing difficulty, and 1 editable microsoft word worksheet.
Compensation Strategy for Mental Subtraction.
By visually illustrating the mental subtraction strategy of compensation by using moving base ten blocks and a bin my students where able to better understand how answers are adjusted by adding back or subtracting more and therefore compensating for the rounding which made the question easier.
PowerPoint includes 5 examples with base ten blocks and 5 matching slides with matching sums but just the thought process and 2 additional examples without base ten blocks to help learners move from a pictorial representation to an abstract one.
Download includes a double sided worksheet based around the PowerPoint teaching.