___________
Maths
Understand additive relationships and apply them to rearrange equations
Starter quiz
Try it
Give to class
Which number represents the subtrahend in this equation? 31 − 10 = 21
31
21
10 ✓
What is the difference between 19 and 21?
'2' ✓
What is 100 − 30 =
______
'70' ✓
What is 200 − 50 =
______
'150' ✓
Calculate the missing number is this equation: 40 + ___ = 220
160
170
180 ✓
200
Which pairs of numbers have a sum of 600?
100 and 400
200 and 500
300 and 300 ✓
200 and 400 ✓
+