Copyright © Swun Math Grade 6 Unit 5 Lesson 7-8a Re-Engage
Name: ____________________________
Date: ______________________________
Re-Engage
Unit 5 Lessons 7-9a: Generate and Solve Addition
and Subtraction Equations - Scale Model
Model
1. Orlando had 12 lollipops. He gave some
to his sister and now he has 7 lollipops.
How many did he give to his sister?
Orlando gave his sister ______ lollipops.
2. Rico had 9 marbles in a bag. His brother
gave him some more marbles and now
he has 16 marbles. How many marbles
did his brother give him?
Ricos brother gave him ______ marbles.
Structured Guided Practice
Directions: Use the scale model to solve.
Steps:
1. Read and understand the
problem.
2.
Identify the unknow
n
value and key
words.
3.
Write
the equation.
4.
Use the scale model
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
8 +
p
12
=
p
p
+ 8 12
=
p
4
=
unknown:
equation:
solution:
=
unknown:
equation:
solution:
Copyright © Swun Math Grade 6 Unit 5 Lesson 7-8a Re-Engage
Re-Engage
Unit 5 Lessons 7-9a: Generate and Solve Addition
and Subtraction Equations - Scale Model
Student Practice
Directions: Use the scale model to solve.
1. Cam had 52 playing cards. He dealt out
some cards. He has 27 cards left. How
many cards did he deal out?
Cam dealt ______ cards.
2. Nicole had 18 books. She bought some
more at a garage sale. Now she has 27
books. How many books did she buy at
the garage sale?
Nicole bought ______ books.
3. Jeremy has 15 toy cars. He got some
more toy cars for his birthday. He now
has 26 toy cars. How many did he get for
his birthday?
Jeremy received ______ toy cars.
4. Aubree had 14 dolls. She gave some to
her sister. Now Aubree has 6 dolls. How
many dolls did she give to her sister?
Aubree gave ______ dolls to her sister.
=
unknown:
equation:
solution:
=
unknown:
equation:
solution:
=
unknown:
equation:
solution:
=
unknown:
equation:
solution: