Subtraction strategies Maths Games For Year 2 (age 6-7)
There are lots of tips and strategies that can be used to help with mental subtraction of numbers, including subtracting by 9 or 11 by taking away 10 and adjusting, as well as knowing that subtraction is the inverse of addition. These activities will all help with gaining confidence and speeding up calculations.
Subtract 9 from a 2 Digit Number
Remember, it is usually easier to subtract ten and then add one back on when working out answers in your head.
Subtract 19 From a 2 Digit Number
The robots have finished hoovering so now they are taking 19 away from 2-digit numbers. They work together: one takes twenty away and the other adds one!
Subtract 11 From A 2 Digit Number
It's too cold for swimming so why not try some subtracting eleven questions: they are quite easy.
Subtract 21 from a 2 Digit Number
Two steps to get these correct. Usually I take 20 then take another one away, although sometimes I take one away first and then twenty. It's up to you!
Subtract a Single Digit from a 2 Digit Number
A wide variety of strategies will be used to achieve a high score on this timed activity, subtracting a single digit from a 2-digit number.
Subtract a Single Digit from a Multiple of 10
Subtracting a single digit from a multiple of 10 is often best done by adding on to the next whole ten and then counting on in tens. Only 30 seconds, so not much time to get a high score!
Subtract a Single Digit Crossing Ten
Tricky game to practise subtracting a single digit crossing the tens boundary.
Subtract a Single Digit Crossing 20
The time counts down and the stars move faster in this fun game where you can practise subtracting a single digit crossing 20.
Subtract 2 Multiples of 10 up to 100
Further practice at subtracting two multiple of ten. Ten would be a fantastic score!
Subtract 2 Multiples of 100
Eat up the ladybirds by adding multiples of 100 correctly.
Check Subtraction with Addition
Once you know one subtraction fact there are two addition facts that can be easily worked out. An excellent way to check that subtraction is correct.
Addition as the Inverse of Subtraction
More sums using knowledge that addition is the inverse of subtraction.
Subtraction as the Inverse of Addition
Very similar exercise, this time showing that subtraction is the inverse of addition.
