Subtract and Add Multiples of 10
Description: Practice for CCSS.Math.Content.1.NBT.C.6 Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies.
Tags: 1st grade math, Subtraction, CCSS.Math.Content.1.NBT.C.6
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