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## McGraw-Hill Math Grade 3 Answer Key Chapter 4 Lesson 9 Problem Solving

**Solve.**

**Draw pictures to help you solve these problems.**

Question 1.

Franz bought 3 bags of lemons. Each bag has 7 lemons. How many lemons does he have in all?

__21__ in all

__3__ × __7__ = __21__ lemons

Answer:

Number of lemons he have in all = 21.

Explanation:

Number of lemons of bags Franz bought = 3.

Number of lemons in each bag = 7.

Number of lemons he have in all = Number of lemons of bags Franz bought × Number of lemons in each bag

= 3 × 7

= 21.

Question 2.

The zoo has 11 black bears and 13 brown bears. How many bears live at the zoo?

_____ in all

____ + ____ = ____ bears

Answer:

Total number of bears in the zoo = 24.

Explanation:

Number of black bears in the zoo = 11.

Number of brown bears in the zoo = 13.

Total number of bears in the zoo = Number of black bears in the zoo + Number of brown bears in the zoo

= 11 + 13

= 24.

Question 3.

Nick tries to solve 2 × 1. He drew these circles.

Why will his answer be wrong?

Answer:

Equation: 2 × 2 = 4 not 2 × 1 = 2. He tries wrong.

Explanation:

Number of dots in each box = 2.

Number of boxes of dots = 2.

Total dots = Number of dots in each box × Number of boxes of dots

= 2 × 2

= 4.