2.N.5.a
Solve authentic problems involving addition and subtraction within 100 in situations of addition and subtraction, including adding to, subtracting from, joining and separating, and comparing situations with unknowns in all positions using objects, models, drawings, verbal explanations, expressions, and equations.
Example Problems
Donald has twenty-dollar bills and ten-dollar bill.
How much money does Donald have?
Write your answer as an expression.
How much money does Donald have?
Write your answer as an expression.
Emily is reading a book with pages. She finishes 13 pages on the first day.
How many pages does Emily still have left to read?
Write your answer as an expression.
How many pages does Emily still have left to read?
Write your answer as an expression.
Manny has boxes of crayons, each containing 12 crayons. He gave away 5 crayons.
How many crayons does Manny have left?
Write your answer as an expression.
How many crayons does Manny have left?
Write your answer as an expression.
Khan Academy ResourcesAdd and subtract on the number line word problemsSubtraction word problems within 100Adding up to four 2-digit numbers word problemsAdd and subtract within 20 word problemsAddition word problems within 100Subtraction word problem: basketballAdding multiple 2-digit numbers word problemsAddition word problem: horsesMulti-step subtraction word problemAddition and subtraction word problems: gorillasMulti step addition word problemSubtraction word problem: crayons
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