Find 10 more or 10 less than a 2-digit number

Help prepare your students to mentally find 10 more or 10 less than a 2 digit number without counting and also see the link to addition and subtraction of 10. The visuals aids used are the 100 number square and dienes.

Worksheet Set 1. 10 More or 10 Less with the 100 Square
Shows the 100 Square as a reference if needed for pupils to quickly figure out or check their answer, and contains a mix of twenty “10 more or 10 less” questions.

Worksheet Set 2. Plus 10 or Minus 10 with the 100 Square
Also shows the 100 Square and contains twenty questions laid out in equation form for the pupils to complete.

Worksheet Set 3. Add 10 with Dienes
Eight questions presented as equations to complete with Dienes as a visual aid.

Worksheet Set 4. Subtract 10 with Dienes
Eight questions presented as equations to complete with Dienes as a visual aid.

Worksheet Set 5. 10 More with Dienes
Eight questions to complete with Dienes as a visual aid.

Worksheet Set 6. 10 Less with Dienes
Eight questions to complete with Dienes as a visual aid.

Worksheets Set 7 & 8
30 questions with a mix of the more/less and plus/ minus so pupils can test their skills on this topic without visual aid and hopefully see the connection between the worded questions and the equations.
Worksheet 7 is straightforward, whilst Worksheet 8 adds a challenge in that the solutions are found by using the opposite (inverse) operation to the one stated in the question.

How many worksheets are there in total ?
Lots and lots … At the click of a button numbers are randomised, so the questions change every time which allows you to create new worksheets at the same level for extra practice or revision throughout the year or even give groups of pupils in your class different sets of questions again all at the same level.

No-Prep Worksheets
These are straightforward no-prep worksheets simply Click -Print and Go. They are ideal for lesson fillers, and to have ready for a substitute teacher if needed.

Teaching Pages
Designed for use with the Interactive whiteboard for whole class teaching or on a computer for one-to-one tuition to help introduce the pupils to the content of the Worksheets.

Teaching Page 1. 10 More or 10 Less with the 100 Square
Click on a button and a number is chosen at random on the 100 square and pupils can enter their answer via a built in calculator and get instant feedback.
You can choose the type of questions: 10 more than / 10 less than / equations with + / equations with -

Teaching Page 2. Plus or Minus 10 with Dienes
Click on a button and a number is chosen at random and pupils can add or remove 10 Dienes to get a visual sense of the problem, then enter their answer via the built in calculator.
Here again you can choose the type of questions: 10 more than / 10 less than / equations with + / equations with -

Note
These resources work with the official Adobe Acrobat Reader on Windows or Mac computers