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Topic 3

Add with Sums to 100

TermDefinition
tens the digit that shows how many groups of 10 are in a number
ones the digit that shows how many ones in a number
open number line a tool that can help you add and subtract. It can begin at any number.
break apart putting a number into its place value parts
compensation a math strategy you can use when adding or subtracting to add or subtract numbers more easily
round a number to the nearest ten, you can use the ten that is closest number
estimate make a guess to find the sums or differences of numbers, you can round each number to the nearest ten
Created by: user-1611885
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