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Addition and Subtraction Strategies
Questions (3)
please explain how to use doubles plus 1 and doubles minus 1
3 answers
asked by
eduardo
408 views
My daughter brought home this question:
How does knowing 28=30-2 help you find 13+28? Any ideas?
4 answers
asked by
Alia
264 views
choose any 3 digit number. How you can add and substract 10 and 100 from that number. Explain your mental strategies for adding
2 answers
asked by
Ak
522 views
Parent Categories (1)
Arithmetic
