## Envision Math 3rd Grade Textbook Answer Key Topic 2.4 Problem Solving

**Problem Solving**

**Try, Check, and Revise
**Tad, Holly, and Shana made 36 posters all together. Shana made 3 more posters than Holly. Tad and Holly made the same number of posters.

Question.

How many posters did Shana make?

Answer:

**Guided Practice**

**Do you know HOW?**

Question 1.

Peg and Pat are sharing 64 crayons. Pat has 10 more crayons than Peg. How many crayons does each girl have?

Answer:

**Do you UNDERSTAND?**

Question 2.

Look at the diagram for Problem 1. Why aren’t Peg’s part and Pat’s part of the rectangle the same size?

Answer:

Question 3.

Write a Problem Write a problem that can be solved by using reasoning to make good tries.

Answer:

**Independent Practice**

Question 4.

All together, Rod has 38 crayons, markers, and pencils. He has 5 more crayons than markers. He has the same number of markers and pencils. How many markers does he have?

Answer:

**Plan**

Use reasoning to make good tries.

Then check.

Try: 10 + 10 + 13 = 33

Check: 33 < 36

Too low, I need 3 more.

Try: 12 + 12 + 15 = 39

Check: 39 > 36

Too high, I need 3 less.

**Solve**

Revise, using what you know.

Try: 11 + 11 + 14 = 36

Check: 36 = 36

This is correct.

Shana made 14 posters.

Use the pictures at the right for 5 and 6.

Question 5.

The clerk at the flower store puts all the roses into two vases. One vase has 2 more roses than the other vase. How many roses are in each vase?

Answer:

Question 6.

Edna, Jay, and Bob bought all of the carnations in the flower store. Edna bought 2 more than Jay. Bob and Jay bought the same number. How many carnations did Edna buy?

Answer:

Question 7.

Mr. Tyler bought one iris for $1.25 and 3 roses for $3 each. How much did Mr. Tyler spend for the roses?

Answer:

Question 8.

Cam bought an iris for $1.25. He paid with 6 coins. What coins did he use?

Answer:

Question 9.

Jared is thinking of two numbers. They have a sum of 12 and a difference of 6. What are the two numbers?

A. 11 and 1

B. 10 and 2

C. 9 and 3

D. 8 and 4

Answer:

Question 10.

Hanna read that there are 22 types of crocodiles and alligators in all. There are 6 more types of crocodiles than alligators. How many types of crocodiles are there? How many types of alligators are there?

Answer: