NUMBER CHART
30-20=____
10
50-30=___
20
20-10=___
10
40-40=___
0
70-40=___
30
60-10=___
50
50-10=____
40
90-20=____
70
70-10=____
60
Arianne has 80 cents. She spent 20 cents on a pencil. How much money does Arianne have now?
60 cents
The front office had 60 masks available for students. 20 students forgot their mask, so the office provided them to the students. How many masks were left in the front office at the end of the day?
40 masks
Zion has 70 erasers. When he goes to Princeton's house he gives him 10 erasers. How many erasers does Zion have now?
60 erasers
There is a bucket of 60 unsharpened pencils. A student sharpened some of them. Now there are 40 unsharpened pencils. How many pencils did the student sharpen?
20 pencils
There were 90 students in the 1st grade. Some of them went out to play on the playground when it was raining. 60 students stayed inside to do Go Noodle and stay dry. How many students went out to the playground?
30 students
Kristian finds 90 rocks on the playground. When he gets home he gives 10 rocks to his brother. How many rocks does he have left?
80 rocks