Use BASE TEN BLOCKS to show me the number 1310
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Would you round this number up to 10 or down to 0?
up to 10
Would you round this number up to 20 or down to 10?
Up to 20
Would you round this number up to 20 or down to 10?
down to 10
What does it mean to ESTIMATE?
to use what you know about numbers to make a guess
Put these numbers in order from LEAST to GREATEST. 25, 15, 50, 5.
5, 15, 25, 50.
