Unit 9 – Addition and subtraction
How many more do we need to add to total 100? (a)
35
35
65
Make 35 up to 40 with 5 more cubes then add 60 more. 35 + 65 = 100 (b)
47
47
53
Make 47 up to 50 with 3 more cubes then add 50 more. 47 + 53 = 100 We can use totals to 100 to help solve subtractions.
What is 100 − 47? What is 100 − 53?
119
9781380050687__text.indb 119
03/05/2022 10:19
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