Recall the facts up to 10, and the teen facts.
Solve addition problems by using compatible numbers.
Solve addition problems by looking for compatible numbers.
Number Framework Stages 4 to 6.
Using Materials
Problem: Tina catches 6 fish, Miriam catches 7 fish and Liam catches 4 fish. How many do they catch altogether? Discuss and record 6 + 7 + 4 on the board. The students model this with three piles of counters. Ask how these numbers can be added by combining the 6 and 4 piles. Encourage them to add the 6 and 4 first to give 10 which makes the answer 17 obvious. Record the answer.
Examples. Word stories and recording for a “make tens” strategy:
5 + 2 + 5, 9 + 5 +1, 8 + 3 + 7 + 2, 3 + 5 + 5 + 7, 4 + 6 + 4 + 9 + 6, 3 + 6 + 4 + 9 + 7….
Using Imaging
Examples. Word stories and recording for a “make tens” strategy:
6 + 2 + 4, 8 + 5 +2, 8 + 1+ 9 + 2, 1 + 5 + 5 + 9, 4 + 6 + 4 + 9 + 6 , 1 + 5 + 5 + 9 + 7….
Using Properties of Numbers
Examples. Write these numbers on paper and cross out pairs of ten to get the answers:
8 + 6 + 4 + 7 +2, 7 + 8 + 4 + 3 + 2, 5 + 2 + 3 + 7 + 8 + 5, 1 + 2 + 5 + 7 + 9 + 5 + 3….