# Spectrum Math Grade 3 Chapter 3 Lesson 1 Answer Key Adding 3 or More Numbers (1- and 2-digit)

Students can use the Spectrum Math Grade 3 Answer Key Chapter 3 Lesson 3.1 Adding 3 or More Numbers (1- and 2-digit) as a quick guide to resolve any of their doubts

## Spectrum Math Grade 3 Chapter 3 Lesson 3.1 Adding 3 or More Numbers (1- and 2-digit) Answers Key Question 1.
a.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 3 + 6 = 9, 9 + 9 = 18.

b.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 7 + 5 = 12, 12 + 8 = 20.

c.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 6 + 12 = 18, 18 + 13 = 31.

d.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 8 + 17 = 25, 25 + 19 = 44.

e.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 12 + 32 = 44, 44 + 53 = 97.

f.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 8 + 6 = 14, 14 + 2 = 16.

Question 2.
a.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 17 + 93 = 110, 110 + 23 = 133.

b.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 16 + 45 = 61, 61 + 92 = 153.

c.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 82 + 18 = 100, 100 + 23 = 123.

d.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 7 + 19 = 26, 26 + 57 = 83.

e.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 22 + 86 = 108, 108 + 34 = 142.

f.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 50 + 40 = 90, 90 + 60 = 150.

Question 3.
a.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 86 + 93 = 179, 179 + 72 = 251.

b.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 23 + 35 = 58, 58 + 62 = 120.

c.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 18 + 35 = 53, 53 + 67 = 120.

d.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 86 + 54 = 140, 140 + 83 = 223.

e.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 32 + 49 = 81, 81 + 76 = 157.

f.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 13 + 19 = 32, 32 + 23 = 55.

Question 4.
a.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 25 + 66 = 91, 91 + 72 = 163.

b.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 81 + 19 = 100, 100 + 83 = 183.

c.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 53 + 42 = 95, 95 + 93 = 188.

d.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 13 + 12 = 25, 25 + 14 = 39.

e.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 13 + 12 = 25, 25 + 14 = 39.

f.  Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 82 + 76 = 158, 158 + 54 = 212.

Question 5.
a.  Explanation:
In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 86 + 54 = 130, 32 + 52 = 84, 130 + 84 = 214.

b.  Explanation:
In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 92 + 10 = 102, 53 + 47 = 100, 102 + 100 = 202.

c.  Explanation:
In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 81 + 71 = 152, 36 + 27 = 63, 152 + 63 = 215.

d.  Explanation:
In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 12 + 18 = 30, 24 + 19 = 43, 30 + 43 = 73.

e.  Explanation:
In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 93 + 48 = 141, 13 + 27 = 40, 141 + 40 = 181.

f.  Explanation:
In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 41 + 86 = 127, 53 + 22 = 75, 127 + 75 = 202.

Solve each problem.

Question 1.
The bubble gum dispenser has 23 blue gumballs, 16 red gumballs, 14 yellow gumballs, and 7 green gumballs. How many gumballs are in the dispenser?
There are __________ blue gumballs.
There are __________ red gumballs.
There are _____ yellow gumballs.
There are _____ green gumballs.
There are _____ gumballs in the dispenser.
There are ___23_______ blue gumballs,
There are ___16_______ red gumballs.,
There are __14___ yellow gumballs,
There are __7___ green gumballs,
There are __60___ gumballs in the dispenser,

Explanation: In the addition of 4 numbers in a column form first we need to find the sum of first two numbers, find the sum of last two numbers and then add the two sums, 23 + 16 = 39, 14 + 7 = 21, 39 + 21 = 60.

Question 2.
In the fruit basket there are 9 apples, 6 bananas, and 7 oranges. How many pieces of fruit are in the fruit basket?
There are ____ apples.
There are ____ bananas.
There are _____ oranges.
There are ____ pieces of fruit in the basket.
There are __9__ apples.
There are __6__ bananas.
There are __7___ oranges.
There are __22__ pieces of fruit in the basket.

Explanation: In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 9 + 6 = 15, 15 + 7 = 22.

Question 3.
Mr. Williams is 53 years old. Mrs. Williams is 44 years old. Their son is 18 years old. What is the combined total of the ages of the Williams family?
Mr. Williams is __________ years old.
Mrs. Williams is ____ years old.
Their son is ____ years old.
The total of their ages is ___ years.
Mr. Williams is ____53______ years old.
Mrs. Williams is _44___ years old.
Their son is __18__ years old.
The total of their ages is _115__ years.

Explanation: In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 53 + 44 = 97, 97 + 18 = 115.

Question 4.
When Hailey went shopping for school supplies, she bought a calculator for 14 dollars, a package of paper for 5 dollars, a calendar for 3 dollars, and a package of pens for 3 dollars. How much did Hailey spend on school supplies?
Hailey spent __________ dollars on school supplies. 