2.NBT.B.5
Fluently add and subtract within 100 using properties of operations, strategies based on place value, and/or the relationship between addition and subtraction.
Khan Academy ResourcesAdd and subtract on the number line word problemsSubtraction word problems within 1002-step subtraction word problems within 100Find the missing number (add and subtract within 100)Subtract 10s and 100s (no regrouping)Estimate to add multi-digit whole numbersAdding up to four 2-digit numbers2-step addition word problems within 100Add 10s and 100s (no regrouping)Addition word problems within 100Adding and subtracting on number line word problemsSubtraction word problem: basketballSubtracting 1s using place valueAdding two digit numbers on a number lineAddition word problem: horsesSubtracting 10s using place valueMulti-step subtraction word problemMulti step addition word problemSubtraction word problem: crayons

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