Reteach and Skills Practice Workbook

12–4
Name
Reteach (1)
Problem-Solving Strategy
Logical Reasoning
Use logical reasoning to solve each problem.
Date
Dan needs to put 6 cups of sea salt into the saltwater tank. He has a
7-cup container and a 5-cup container. How can he use the containers
to measure 6 cups?
4MR1.1, 4SDAP1.1
Chapter Resources
Step 1. Understand
Be sure you understand the problem.
Read carefully.
What do you know?
• Dan needs to put cups of sea salt
in a saltwater tank.
• Dan has containers that hold cups
and cups.
What do you need to find?
• You need to find how to use the
containers to measure
cups.
Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Step 2. Plan
Step 3. Solve
Steps
Make a plan.
Choose a strategy.
Use logical reasoning to solve the problem.
You can use the difference in the amount each
container can hold to measure exactly 6 cups.
Carry out your plan.
Complete the table. It will show how to use
the 7-cup container and the 5-cup container to
measure exactly 6 cups.
Sea Salt in
7-cup Container
Sea Salt in
5-cup Container
Sea Salt in
Tank
1. Fill the 7-cup container. 0 0
2. Fill the 5-cup container
from the 7-cup container
5 cups 0
Grade 4 219 Chapter 12