Estimation
Estimate:
65 + 32
Estimation: 70+30= 100
Find the sum. 43 + 49 = _______
A) 82
B) 83
C) 92
D) 93
C) 92
Find the difference. 23 – 7 = ____________
A) 24
B) 16
C) 14
D) 30
B) 16
Adan earned $81 by walking his neighbor’s dogs. Jorge earned $140 by babysitting his cousins. How much more money does Jorge have than Adan?
$59
Estimate: 643 - 32
700 - 30 = 670
Find the sum. 896 + 67 = _________
A) 953
B) 854
C) 963
D) 8,163
C) 963
Solve. 917 – 38 = __________
A) 921
B) 878
C) 955
D) 879
D) 879
O’Bryan has an ant farm with 86 ants. Michael’s ant farm has 43 fewer ants than O’Bryan. How many ants are in Michael’s ant farm?
43 ants
Estimate: 805 + 389
800 + 400 = 1200
Find the sum of 397 and 455.
A) 742
B) 852
C) 58
D) 752
B) 852
How much less is 85 than 200?
115
Jesus’ football team scored 93 points in the first 3 games. In the first game they scored 25 points. In the second game they scored 36 points. How many points did they score in the third game?
32 points
Estimate the sum of 367 and 408
400 + 400 = 800
Estimate 32 + 74 + 68. Solve.
Estimate: 30 + 70 + 70 = 170
Exact Answer: 174
Estimate the difference of 765 and 242. Then solve.
Estimate: 800 - 200 = 600
Exact Answer: 523
Jada and her 2 friends sold 272 boxes of girl scout cookies. Darlyn sold 92 boxes. Gabi sold 84 boxes. How many boxes did Jada sell?
96 cookies
Estimate 782 - 94.
800 - 90 = 710
805 + 389
1,194
643 - 32
611
Landon owns a collection of baseball cards. For his birthday his brother gave him 65 cards and his cousin gave him 78 cards. Landon now has 225 cards in his collection. How many baseball cards did Landon have before his birthday?
82 cards