Quandaries
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Name: Patricia Who is asking: Parent Level of the question: Elementary Question: explaination of how to add three addends if you use a double to add or if you use a sum of 10 8+3+2= thank you |
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Hi Patricia, We're not sure what "double to add" means. 8+3+2 *Sum of 10*: can get 10 with 8 and 2, so the answer is 13
6+4+0 *Sum of 10*: can get 10 with 6 and 4, so the answer is 10 OR 4 and 4 is 8 and 2 more is 10
3+3+6 *Sum of 10*: 6 and 3 is 9, one more (from 3) is 10, so answer is 12
2+5+4 *Sum of 10*: 5 and 4 is 9, one more (from 2) is 10, so answer is 11
Paul and Penny |