Copyright © Swun Math Grade 6 Unit 5 Lesson 7-8b Re-Engage
Name: ____________________________
Date: ______________________________
Re-Engage
Unit 5 Lessons 7-9b: Generate and Solve Addition
and Subtraction Equations - Inverse Operation
Model
1. Orlando had 15 gumdrops. He gave some
to his sister and now he has 6 gumdrops.
How many did he give to his sister?
Orlando gave his sister ______ gumdrops.
2. Rico had 8 ice cubes in a cup. His
brother gave him some more ice cubes
and now he has 12 ice cubes. How many
ice cubes did his brother give him?
Ricos brother gave him ______ ice cubes.
Structured Guided Practice
Directions: Use the inverse operation to solve.
Steps:
1. Read and understand the
problem.
2. Identify the unknown
value and key words.
3. Write the equation.
4. Use the inverse operation
to solve.
Kevin had 8 pennies. His mom gave him some more
pennies and now he has 12 pennies. How many pennies
did his mom give him?
Kevins mom gave him ______ more pennies.
unknown:
p
= number of pennies
Mom gave Kevin
equation:
8 +
p
= 12
solution:
p
= 4
4
unknown:
equation:
solution:
unknown:
equation:
solution:
8 +
p
= 12
p
= 12 - 8
p
= 4
Copyright © Swun Math Grade 6 Unit 5 Lesson 7-8b Re-Engage
Re-Engage
Unit 5 Lessons 7-9b: Generate and Solve Addition
and Subtraction Equations - Inverse Operation
Student Practice
Directions: Use the inverse operation to solve.
1. Cam had 26 playing cards in his hand.
He played some of them. Now he has 19
cards left in his hand. How many cards
did he play?
Cam played ______ cards.
2. Nicole had 17 coloring books. She
bought some more at a garage sale. Now
she has 30 coloring books. How many
coloring books did she buy at the garage
sale?
Nicole bought ______ coloring books.
3. Jeremy has 19 action figures. He got
some more action figures for his
birthday. Now he has 31 action figures.
How many did he get for his birthday?
Jeremy received ______ action figures.
4. Aubree had 34 stickers. She gave some
to her sister. Now she has 15 stickers.
How many stickers did she give to her
sister?
Aubree gave her sister ______ stickers.
unknown:
equation:
solution:
unknown:
equation:
solution:
unknown:
equation:
solution:
unknown:
equation:
solution: