Exponents
103 in expanded and standard form
10 x 10 x 10
1,000
432 x 877
How do you decide which numbers to use when estimating?
You round or use compatible numbers
or something similar
432 x 12
5,184
12 x ___ = 108
9
1 x 1 = ?
1
103 x 2 = ?
2,000
Kimball orders 119 cartons of milk. Each carton holds 37 milks. Round each number to the nearest ten and estimate the total number of milks.
120 x 40 = 4,800 milk
1,322 x 32
42, 304
123 x 4
492
FREEBIE!!!
FREEBIE!!!
105 x 68 = ?
6,800,000
Write an equation that shows estimation
934 x 37
900 x 30
930 x 30
Or something similar
Zuriel's soccer team travels 125 miles round trip for each tournament. The team attends 14 tournaments during the year. How many miles does the team travel in total?
1,750
3,657 x 8
29,256
54.38 - 3.3
51.08
Write 6,000,000 using exponents
6 x 106
Which estimate is closest to the actual product of 118 x 36?
A. 3,000
B. 3,600
C. 4,200
D. 5,000
C. 4,200
Alex earns 275 points each time he completes a game challenge. He completes 24 challenges. How many points does Alex earn altogether?
6,600
23,568 x 5
117,840
10.001-8.7
1.301
Which two examples make 106 true?
a. 4 x __ = 4,000,000
b. 10,000
c. 10 x ___ = 10,000,000
d. 4 x ___ = 400,000
a & c
The district orders 178 cartons of math books. Each carton holds 43 books.
Is this an overestimate or an underestimate?
Explain why.
Find the actual product.
200 x 40 = 8,000
178 x 43 = 7,654
This is an overestimate because it is greater than the actual product.
Diland ran 14 miles on day 1, 67 miles on day 2, and 102 miles on day 3. It took him 13 minutes to run 1 mile. After day 3, how long did it take him to run all of his miles?
2,379 mintes
235,654 x 9
2,120,886
3.6