Estimating
Round the following multiplication equation to the nearest hundred if it is a 3 digit # and nearest ten if it is a 2 digit #:
174 X 42.
What is 200 X 40?
93 X 32?
What is 3,906?
14
X 5What is 70?
47 X 4
What is 188?
40 X 4 = 160
7 X 4 = 28
Estimate the product.
231 X 43.
What is 200 X 40?
363 X 42
What is 15,246?
86
X 4
What is 344?
132 X 3
What is 396?
100 X 3 = 300
30 X 3 = 90
2 X 3 = 6
5th graders sold 412 baked goods at a bake sale. ABOUT how much did the 5th graders earn if each baked good was $11 each?
What is 400 X 10 = $4,000?
402 X 82
What is 32,964?
253
X 3
What is 759?
413 X 6
What is 2,478?
400 X 6 = 2,400
10 X 6 = 60
3 X 6 = 18
The town library has 478 shelves. Each shelf holds 38 books. About how many books does the library have? (Hint: Round to the nearest 100 if 3-digit and nearest 10 if 2-digit).
What is 500 X 40 = 20,000?
201 X 23
What is 4,623?
512
X 7
What is 3,584?
1,432 X 6
What is 8,592?
1,000 X 6 = 6,000
400 X 6 = 2,400
30 X 6 = 180
2 X 6 = 12
A theater has 324 seats and 36 performances in one season. There were 31 theater seats left empty for each performance. How many people attended the 36 performances? Give an estimate and an exact answer.
What is 293 X 36 = 10,448 (exact)?
What is 300 X 40 = 12,000 (estimate)?
321 X 32
What is 10,272?
487
X 9
What is 4,383?
413 X 27
What is 11,151?