Totals and change
We can use what we know about addition and subtraction to help find totals and change. We can find the total of the 3 items in different ways:
45c + 30c = 75c 75c + 15c = 90c
45c + 15c = 60c 60c + 30c = 90c
30c + 15c = 45c Double 45 is 90 c
The total of the 3 items is 90 c. What change will we get from $1?
+
90 c
100 c
100 − 90 = 10 because 90 + 10 = 100
(a) What is the total of this set of items?
1
+ $
= $
$
$
+ $
= $
$
+ $
= $
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03/05/2022 10:19
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