Symphony
Symphony EXTENSIONS
EXTENSIONS
Student:
19
2.
What number is 2 past 18?
20
3.
What number is 3 before 17?
14
4.
Circle the number sentence below that is NOT true:
13 + 6 = 19
15 = 10 + 5
8 + 7 = 16
12 = 9 + 3
6.
What do you add to 11 to make 19?
7.
What is my number?
8
I am 7 more than 5.
12
I am 5 more than 7.
12
I am 7 less than 12.
5
Page 1
Copyright © 2014 Symphony Learning LLC. Permission is granted to reproduce this sheet for classroom use.
On a number line, what number comes
just before 20?
1.
AN S W ER K EY
6 | Add & Subtract to 20
Date:
Rosa has 14 toy animals. She has some turtles and 8 frogs.
Can she have the same number of turtles as frogs? Use a
model to show your answer.
Sample model showing the frogs and turtles adding up to 14.
My Model:
F
F
F
F
F
T
T
F
F
F
T
T
T
T
My Answer:
No. Rosa has 6 turtles and 8 frogs.
9.
Use the numbers 6, 9, and 15.
* Write 2 addition number sentences using all three numbers.
* Write 2 subtraction number sentences using all three numbers.
6 + 9 = 15
15 – 9 = 6
9 + 6 = 15
15 – 6 = 9
Page 2
Copyright © 2014 Symphony Learning LLC. Permission is granted to reproduce this sheet for classroom use.
8.
AN S W ER K EY
Symphony EXTENSIONS