Page 151 - NUMINO TG_2A
P. 151
Activity 3 Word Problems
jOb ective Write addition and subtraction sentences to solve word problems.
1. Textbook Instructions Activity 3 Word Problems
Explain how to solve word problems by 1 Write number sentences to solve.
writing out addition sentences.
a There are 15 pieces of candy. How many pieces of candy do
you need to make 32 pieces of candy?
15 32 15+ =32
=32-15
1. Write an addition sentence using that =17
represents the missing number.
1a. Use the 4-step method.
Understand the Question
Q: What are we trying to find? b Ann had 13 pencils. Thomas gave her more pencils. Now she
has 30 pencils. How many pencils did Thomas give Ann?
A: The number of candies.
13 30
Q: How many candies are there? 13+ =30
=30-13
A: 15. =17
Q: How many candies do we need?
A: 32.
Plan the Process
Q: How can we solve it?
A: Use that represents the missing
number in a sentence. c There were 28 coins in the piggy bank. Thomas put more
coins, and there are now 43 coins in the piggy bank. How
Solve the Problem many coins did Thomas put in the piggy bank?
Q : Write an addition sentence. 28 43
28+ =43
A : 15 32. =43-28
=15
Look Back
84
Q : What is the answer?
A : 17.
2. Build Understanding
Problem 1: There are 6 cows and 13 sheep in a farm. 19 30
The sheep had babies and now there are
a total of 30 cows and sheep. How many
babies did the sheep have?
Solution: 6 13 30, 19 30, 11
Answer: 11 babies.
134 NUMINO Teacher s Guide
jOb ective Write addition and subtraction sentences to solve word problems.
1. Textbook Instructions Activity 3 Word Problems
Explain how to solve word problems by 1 Write number sentences to solve.
writing out addition sentences.
a There are 15 pieces of candy. How many pieces of candy do
you need to make 32 pieces of candy?
15 32 15+ =32
=32-15
1. Write an addition sentence using that =17
represents the missing number.
1a. Use the 4-step method.
Understand the Question
Q: What are we trying to find? b Ann had 13 pencils. Thomas gave her more pencils. Now she
has 30 pencils. How many pencils did Thomas give Ann?
A: The number of candies.
13 30
Q: How many candies are there? 13+ =30
=30-13
A: 15. =17
Q: How many candies do we need?
A: 32.
Plan the Process
Q: How can we solve it?
A: Use that represents the missing
number in a sentence. c There were 28 coins in the piggy bank. Thomas put more
coins, and there are now 43 coins in the piggy bank. How
Solve the Problem many coins did Thomas put in the piggy bank?
Q : Write an addition sentence. 28 43
28+ =43
A : 15 32. =43-28
=15
Look Back
84
Q : What is the answer?
A : 17.
2. Build Understanding
Problem 1: There are 6 cows and 13 sheep in a farm. 19 30
The sheep had babies and now there are
a total of 30 cows and sheep. How many
babies did the sheep have?
Solution: 6 13 30, 19 30, 11
Answer: 11 babies.
134 NUMINO Teacher s Guide
