Rounding
Balanced Equations
Story Problems
Addition or Subtraction
100
Round the number to the nearest 10: 42
40
100
Make it true:
25 + s = 50
s = 25
100
Hannah and Rachel had a reading contest to see who read the most pages. Hannah read 158 pages and Rachel read 194 pages. How many more pages did Rachel read than Hannah?
36 more pages
100
23 + 48 = s
s = 71
200
Round the number to the nearest 10: 85
90
200
True or False:
False (They did Give and Give. You can't do that!)
200
James earned 278 coins in his game. Then he earned 154 more. How many coins does he have in all?
432 coins
200
164 - 143 = m
m = 21
300
Round the number to the nearest 100:
812
300
True or False:
True! This is constant difference
300
Phil collects rocks. He had 53 rocks in his collection before going on vacation. When he got back from his trip he had 90 rocks. How many rocks did he collect on vacation?
37 rocks
300
405 + 112 = x
x = 517
400
Round the number to the nearest 100: 485
500
400
Make it true:
542 (give and take)
400
Julie gets to level up in her game when she reaches 200 points. If she has 161 points right now, how many more does she need to level up?
39 points
400
224 - 115 = g
g = 109
500
Round the number to the nearest 100: 1,355
1,400
500
Make it true:
544 (constant difference)
500
The school had 253 students. Over winter break 64 students moved away but 16 new students moved in. How many students are in the school now.
205 students
500
91 - 19 = f
f = 72