Don’t forget the ‘=’ sign doesn’t just mean we need to answer, it can also be a balancing point!
The rule that we have developed in 5MR for balancing a sum is…..
‘whatever operation you use (addition, multiplication) with one pair of numbers, you must
do the opposite with the other pair’
*remember to match the closest numbers on opposite sides as pairs!
eg. 63 + 29 = 30 + X
We added one to get from 29 to 30, so we must take one away from 63, therefore X = 62