All the solutions provided in McGraw Hill Math Grade 2 Answer Key PDF Chapter 2 Lesson 3 Problem Solving will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 2 Answer Key Chapter 2 Lesson 3 Problem Solving
Kelly puts 5 party favors in each bag. She has 6 bags. How many favors does she need in all?
1 Understand Underling what you know. Circle what you need to find.
2 Plan How will I solve the problem?
3 Solve Find a pattern.
4. Check Is my answer reasonable? Explain.
Practice the Strategy
Kate and Pedro count the tickets they sold to attend a museum. They sold 10 tickets each day for 5 days. How many tickets were sold?
1. Understand Underline what you know. Circle what you need to find.
2. Plan How will I solve the problem?
3. Solve I will…
___, ____, ___, ___, ____
By day 5, ___ tickets were sold in all.
4. Check Is my answer reasonable? Explain.
Explanation:
Number of tickets per day = 10
Number of days = 5
5 x 10 = 50
So, number of tickets sold in all = 50 tickets
Apply the Strategy
Question 1.
Xavier is looking at a map of the desert. He knows that each finger width is about 10 miles. How many miles will he count if he uses 7 finger widths?
______ miles
Answer:
70 miles
Explanation:
He knows that each finger width is about 10 miles.
he uses 7 finger widths
7 x 10 = 70
70 miles that he will travel
Question 2.
Sam thinks of the number pattern 15, 20, 25, 30. He continues this pattern. What will be the next four numbers?
________ , ________ , ________ , ________
Answer:
15, 20, 25, 30, 35, 40, 45, 50
Explanation:
The pattern that Sam thought about was skip by 5
in skip by 5 keep adding five to get to the next number
30 + 5 = 35
35 + 5 = 40
40 + 5 = 45
45 + 5 = 50
Question 3.
Amar sees this number pattern. What is the missing number?
10, ___, 20, 25, 30
Answer:
10, 15, 20, 25, 30
Explanation:
15 is the missing number
The given pattern is skip by 5
in skip by 5 keep adding five to get to the next number
Review the strategies
Choose a strategy
- Write a number sentence.
- Act it out.
- Find a pattern.
Question 4.
Justin is stacking books. There are 5 books in the first stack. 10 in the second stack. The third stack has 15 books. The pattern continues. How many books will be in the next stack?
____ books
Answer:
20 books
Explanation:
There are 5 books in the first stack.
10 in the second stack. The third stack has 15 books.
The pattern continues.
The pattern is skip by 5
in skip by 5 keep adding five to get to the next number
15 + 5 = 20
Question 5.
On the first day of the food drive, Ms. Buckle’s class collects 8 cans. Mr. Cline’s class collects 6 cans, and Mrs. Brown’s class collects 5 cans. How many cans do they collect in all?
______ cans
Answer:
19 cans
Explanation:
Ms. Buckle’s class collects 8 cans.
Mr. Cline’s class collects 6 cans,
and Mrs. Brown’s class collects 5 cans.
8 + 6 + 5 = 19
19 cans that they collect in all
Question 6.
Josh recorded how many inches of snow fell in each month. Continue the pattern. How many inches fell in January?
Answer:
Explanation:
The given pattern about rain fall was skip by 2
we keep adding the same number each time to the previous number.
16 + 2 = 18
In month of January 18 inches of rain fall was measured.
McGraw Hill My Math Grade 2 Chapter 2 Lesson 3 My Homework Answer Key
Practice
Underline what you know. Circle what you need to find. Find a pattern to solve.
Question 1.
One elephant has four legs. Two elephants have eight legs. How many legs do five elephants have? ____
Answer:
20 legs
Explanation:
One elephant has four legs.
Two elephants have eight legs.
20 legs that five elephants have
1 x 4 = 4
2 x 4 = 8
3 x 4 = 12
5 x 4 = 20
Question 2.
Corey is thinking of a number. It is the next number in the pattern 50, 45, 40, 35. What is the number? ____
Answer:
The number is 40
Explanation:
50, 45, 40, 35.
The pattern is skip by 5
in skip by 5 keep adding five to get to the next number
35 + 5 = 40
Question 3.
Brad has groups of 10 pennies. Brad counts 40, but he has 6 more stacks to count. How many pennies does he have?
___ pennies
Answer:
100 pennies
Explanation:
Brad has groups of 10 pennies.
Brad counts 40,
but he has 6 more stacks to count.
6 x 10 = 60
60 + 40 = 100
100 pennies that he have.
Test Practice
Question 4.
Which of the following is an example of skip counting?
8, 10, 20, 30, 40
40,35,25, 15,20
20, 25, 30, 35, 40
45, 55, 60, 70, 80
Answer:
8, 10, 20, 30, 40
40,35,25, 15,20
20, 25, 30, 35, 40
45, 55, 60, 70, 80
Explanation:
The given pattern is skip by 5
20 + 5 = 25
25 + 5 = 30
So, marked the third option.
Math at Home Ask your child to write a number pattern that uses 5 or 6 numbers. Have him or her explain the pattern to you.