A 3 minute timed test with 20 questions of subtracting 2 and 3 digit numbers. Answers slide and sound effects. Ideal starter activity or mental/oral maths test.
20 doubling whole numbers questions and answers. Ideal starter; mental math. Aligned with Common Core State Standards: 3.NBT.2, Number and Operations in Base Ten; 4.NBT.4, Number and Operations in Base Ten.
Six separate activities where pupils must subtract either 10, 50 or 100 from a given number. Running on a two minute timer, these tasks are can be used as a starter or work as both mental math drill and explanation activities.
20 odd, even or prime numbers questions and answers on a 5 minute timer, increases with difficulty with each test. Ideal starter, mental math or concluding activity.