Number Lines
Using a number line solve 30-20.
10
Ms. Majava has 10 carrots. She gives 10 to Max to eat for snack. How many carrots does Ms. Majava have left to give him later?
0
If 12-10=____, then 10+___=12
2
Solve 120-120=_____ in your head.
0
Show your work on you 120 chart to solve 88-47.
41
Using a number line solve 87-30.
57
Ms. Williams has 30 papers to grade. If she already graded 10 of them, how many are left to grade?
20
If 28-14=_____, then 14 + _____=28
14
Solve 50-25=_____ in your head.
25
Show your work on you 120 chart to solve 76-30.
46
Using a number line solve 66-60.
6
Mrs. Donnini has 70 pencils. If she gives each of her 20 students a pencil, how many are left?
50
89-74=______, so 74 + _____=89
15
Solve 100-70=_____ in your head.
30
Show your work on you 120 chart to solve 35-24.
11
Using a number line, solve 114-90
24
Mrs. Denton has 90 students participating in a drawing. If she chooses 30 names, how many names did she NOT draw?
60
99-98=______, so 98+_____=99
1
Solve 97-30=_____ in your head.
67
Show your work on you 120 chart to solve 76-48.
28
Using a number line, solve 119-110.
9
Ms. Conte has 100 crayons. If she keeps 20 crayons, how many are left for her class to use?
80
120-77=_______, so 77 + _____=120
43
Solve 120-40=_____ in your head.
80
Show your work on you 120 chart to solve 119-20.
99