2.NBT.B.5 Worksheets: Add and Subtract Within 100
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2.NBT.B.5 (Number and Operations in Base Ten): Add and subtract within 100 fluently using place value strategies.
About this standard
In practice this means adding and subtracting two-digit numbers without counting by ones, using tens and ones or a related fact. Regrouping is the big new step. Practice without regrouping first in Two-Digit Subtraction Without Regrouping, then Two-Digit Addition With Regrouping; larger numbers are in 2.NBT.B.7.
Worksheets for 2.NBT.B.5
Doubling and Halving Numbers Within 100
Two-Digit Subtraction Without Regrouping
Two-Digit Addition With Regrouping
Missing Addends Within 100
Missing Numbers in Subtraction to 100
Fact Families Within 100
Pairs That Make 100
Two-Digit Subtraction With Regrouping
Mixed 2-Digit Addition and Subtraction With Regrouping
