Practice with the help of Spectrum Math Grade 1 Answer Key Chapter 1 Lesson 1.23 Using Addition for Subtraction regularly and improve your accuracy in solving questions.
Spectrum Math Grade 1 Chapter 1 Lesson 1.23 Using Addition for Subtraction Answers Key
Think addition for subtraction. Solve each problem.
1.
Answer:
Explanation:
Subtraction:
8 – 4 = 4.
=> Eight minus four equals four.
Addition:
4 + ?? = 8.
=> ?? = 8 – 4
=> ?? = 4.
=> Four plus four equals eight.
2.
Answer:
Explanation:
Subtraction:
10 – 3 = 7.
=> Ten minus three equals seven.
Addition:
3 + ?? = 10.
=> ?? = 10 – 3
=> ?? = 7.
=> Three plus seven equals ten.
3.
Answer:
Explanation:
Subtraction:
7 – 2 = 5.
=> Seven minus two equals five.
Addition:
2 + ?? = 7.
=> ?? = 7 – 2
=> ?? = 5.
=> Two plus five equals seven.
4.
Answer:
Explanation:
Subtraction:
10 – 4 = 6.
=> Ten minus four equals six.
Addition:
4 + ?? = 10.
=> ?? = 10 – 4
=> ?? = 6.
=> Four plus six equals ten.
5.
Answer:
Explanation:
Subtraction:
5 – 1 = 4.
=> Five minus one equals four.
Addition:
1 + ?? = 5.
=> ?? = 5 – 1
=> ?? = 4.
=> One plus four equals five.
6.
Answer:
Explanation:
Subtraction:
8 – 2 = 6.
=> Eight minus two equals six.
Addition:
2 + ?? = 8.
=> ?? = 8 – 2
=> ?? = 6.
=> Two plus six equals eight.
7.
Answer:
Explanation:
Subtraction:
9 – 7 = 2.
=> Nine minus seven equals two.
Addition:
7 + ?? = 9.
=> ?? = 9 – 7
=> ?? = 2.
=> Seven plus two equals nine.
8.
Answer:
Explanation:
Subtraction:
7 – 6 = 1.
=> Seven minus six equals one.
Addition:
6 + ?? = 7.
=> ?? = 7 – 6
=> ?? = 1.
=> Six plus one equals seven.
9.
Answer:
Explanation:
Subtraction:
8 – 5 = 3.
=> Eight minus five equals three.
Addition:
5 + ?? = 8.
=> ?? = 8 – 5
=> ?? = 3.
=> Five plus three equals eight.