Story Problems
Open Number Lines
True or False?
Subtraction Practice
Estimation
100
My brother had 36 shirts in his closet. He donated 15 of them. How many shirts does he have now?
21 shirts
100
Write an equation for this open number line:
76 - 30 = 46
100
12 - 8 = 5
false
100
18 - 4 = ?
14
100
estimate:
19 - 10 = ?
20 - 10 = 10
200
I have 53 pieces of candy from Halloween. I gave away 17 of them. How many do I have left?
36 pieces of candy
200
Write an equation for this open number line:
38 - 24 = 14
200
20 - 14 = 6
true
200
46 - 30 = ?
16
200
estimate:
17 - 9 = ?
20 - 10 = 10
300
Trevor had 38 cookies. He and his siblings ate 7. He gave 12 away. How many cookies does he have left?
19 cookies
300
What is the missing number on this open number line?
42
300
36 - 21 = 15
true
300
57 - 32 = ?
25
300
estimate:
33 - 20 = ?
30 - 20 = 10
400
Joe has 49 dollars. Sarah has 21 dollars. How many more dollars does Joe have than Sarah?
28 dollars
400
Draw an open number line for this equation:
65 - 30 = 35
Answer on Mrs. Hopkins's board!
400
65 - 44 = 20
false
400
65 - 25 = ?
40
400
estimate:
64 - 32 = ?
60 - 30 = 30
500
I had 32 stickers. My sister had 18 stickers. How many fewer sticker did my sister have than me?
14 fewer stickers
500
Draw an open number line for this equation:
86 - 45 = 41
Answer on Mrs. Hopkins's board!
500
82 - 67 = 15
true
500
97 - 39 = ?
58
500
estimate:
48 - 34 = ?
50 - 30 = 20