Ages 6–7🧮 Mathematics12 verified questions on this shelf
Grouping numbers to add
Understand and apply the associative property of addition: when adding three numbers, any two can be added first
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Question 1 of 3
You need to find the total of 7 + 5 + 3. Which grouping lets you add two numbers first to make a round number, making the problem easier?
Question 2 of 3
What is the total of 2 + 6 + 4 if you first add the numbers 6 and 4 together?
Question 3 of 3
Lily is counting her craft supplies: 12 beads, 8 stickers, and 4 ribbons. Which way should she add the numbers first so that the first addition makes a round number, making the counting quicker?
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