3.OA.8
Use various strategies to solve two-step word problems using the four operations (involving only whole numbers with whole number answers). Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. (MP.1, MP.4)
Example Problems
Tony visited an arcade.
He paid $5 for an entry pass plus $0.50 for each game he played.
His total cost was $11.
Determine how many games, , he played by writing and solving an equation.
He paid $5 for an entry pass plus $0.50 for each game he played.
His total cost was $11.
Determine how many games, , he played by writing and solving an equation.
Pastries are on sale.
Today each pastry costs less than the normal price. Right now if you buy of them they will only cost you .
Determine the normal price of each pastry, p, by writing and solving an equation.
Today each pastry costs less than the normal price. Right now if you buy of them they will only cost you .
Determine the normal price of each pastry, p, by writing and solving an equation.
Desmond hired a landscaper who charges a flat equipment fee of $80 plus $10 for each hour of work.
The total charge came to $130.
Determine how many hours, , the landscaper worked by writing and solving an equation.
The total charge came to $130.
Determine how many hours, , the landscaper worked by writing and solving an equation.
Khan Academy Resources2-step estimation word problemsAdd and subtract within 1000 word problems2-step word problemsRepresent 2-step word problems with equations2-step word problem: runningOrder of operations (2-step expressions)2-step word problem: trufflesSetting up 2-step word problems2-step word problem: theater2-step estimation word problems

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