All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 8 Lesson 4 Problem-Solving Strategy: Guess, Check, and Revise will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Answer Key Chapter 8 Lesson 4 Problem-Solving Strategy: Guess, Check, and Revise
The carrot is less than 10 cubes long. It is more than 2 cubes long. About how many cubes long is the carrot
1. Understand
Underline what you know.
Circle what you need to find.
2. Plan
How will I solve the problem?
3. Solve
I will guess, check, and revise.
4. Check
Is my answer reasonable? Explain.
Answer:
Yes, my answer is reasonable as the estimation and action has only one cube different
Practice the Strategy
The container is less than 9 cubes long. It is more than 1 cube long. About how long is the container?
1. Understand
Underline what you know.
Circle what you need to find.
2. Plan
How will I solve the problem?
3. Solve
I will…
Guess: about _________ 
Measure: about ___________
4. Check
Is my answer reasonable? Explain,
Answer:
Explanation:
Guess: about 5
Measure: about 6
The container is 6 cubes long
According to the question the container is more than one cube and less than 9 cubes
so, my answer is reasonable.
Apply the Strategy
About how many 
long is the object? Guess. Then measure. Revise if needed.
Question 1.
Guess: about _________ 
Measure: about ___________
Answer:
Explanation:
Guess: about 12
Measure: about 10
The corn is measuring about 10 cubes long
Question 2.
Guess: about _________
Measure: about ___________
Answer:
Explanation:
Guess: about 3
Measure: about 4
The broccoli is about 4 cubes long
Question 3.
Guess: about _________
Measure: about ___________
Answer:
Explanation:
Guess: about 7
Measure: about 8
The Lettice is about 8 cubes long
Review the Strategies
Choose a strategy
- Guess, check, and revise.
- Draw a diagram.
- Act it out.
Question 4.
The pea pod ¡s more than 1 cube long. It is less than 4 cubes long. About how many cubes long is the pea pod?
about __________ 
Answer:
Explanation:
about 3
The pea pod ¡s more than 1 cube long.
It is less than 4 cubes long.
According to the conditions the pea pod is measuring 3 cubes
Question 5.
A watermelon grows 1 cube longer each day. On Monday, it was 6 cubes long. How many cubes long will the watermelon be on Wednesday?
__________
Answer:
8 cubes long
On Wednesday the watermelon length is about 8 cubes long.
Question 6.
Sergio picks a bean that is 5 cubes long. Perla picks a bean that is 2 cubes long. How much longer is the bean that Sergio picked?
__________
Answer:
3
Sergio picks a bean that is 5 cubes long.
Perla picks a bean that is 2 cubes long.
5 – 2 = 3
3 cubes longer is the bean that Sergio picked.
McGraw Hill My Math Grade 1 Chapter 8 Lesson 4 My Homework Answer Key
Problem Solving
About how many pennies long is the object? Guess. Then measure. Revise if needed.
Question 1.
Guess: about ____________ pennies
Measure: about ____________ pennies
Answer:
Explanation:
Guess: about 2 pennies
Measure: about 3 pennies
The hockey stick is measuring about 3 pennies
Question 2.
Guess: about ____________ pennies
Measure: about ____________ pennies
Answer:
Explanation:
Guess: about 2 pennies
Measure: about 2 pennies
The ball is measuring about 2 pennies
Question 3.
Guess: about ____________ pennies
Measure: about ____________ pennies
Answer:
Explanation:
Guess: about 5 pennies
Measure: about 4 pennies
The net is measuring about 4 pennies
Math at Home Ask your child to guess the length of his or her own shoe in pennies. Then check using actual pennies.
Answer: