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6.09 Multi-step story problems

Lesson

Are you ready?

We have learned to write a number problem from a story problem with multiplication or division already.

There are $8$8 rows of trees in a field, with $3$3 trees in each row.

  1. Write a number sentence for this story problem.

  2. How many trees are there in the field?

Lesson

What happens if our story has more than one part to it? Let's see how to turn that into a number problem with multiplication and division.

Apply

There are $2$2 flower beds in Sarah's backyard.

Each flower bed has $3$3 strawberry plants.

  1. How many strawberry plants are there in total?

  2. If each plant has $4$4 fruit growing on it, how many strawberries are there in total?

Remember!

We can use pictures, numbers or symbols for our problems, so it helps to know how to use each method.

Outcomes

3.OA.8

Solve two-step word problems.

3.OA.8.a

Solve two-step word problems using the four operations. Know how to perform operations in the conventional order when there are no parentheses to specify a particular order (Order of Operations). (Limit to problems posed with whole numbers and having whole number answers.)

3.OA.8.b

Represent two-step problems using equations with a letter standing for the unknown quantity. Create accurate equations to match word problems.

3.OA.8.c

Assess the reasonableness of answers using mental computation and estimation strategies, including rounding.

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