Multiply by Powers of 10
100 x 815
81,500
Best estimate for
7 x 396
2,800
133 x 3
399
76 x 59
4,484
Sarah has 214 bags of beads. Each bag has enough beads to make 22 bracelets. Estimate how many bracelets she can make.
200 x 20 = 4,000 bracelets
6,471 x 101
64,710
Best estimate for
37 x 88
40 x 90 = 3,600
249 x 4
996
302 x 47
14,194
Alexa has a collection of 34 dolls. A toy store has 15 times as many dolls as Alexa. How many dolls are in the store?
510 dolls
39 x 102
3,900
Best estimate for
17 x 63
1,200
343 x 5
1,715
871 x 32
27,872
A store received a shipment of 37 TVs valued at $625 each. What is the total value of the shipment?
$23,125
65 x 103
65,000
Best estimate for
91 x 51
4,500
893 x 7
6,251
604 x 55
33,220
The length of Jame's pool is 16 feet. The length of the pool at Wing Park is 4 times as long. How long is the pool at Wing Park?
64 feet
12 x 104
120,000
Best estimate for
45 x 806
40,000
1,278 x 4
5,112
7,133 x 45
320,985
Larry has 106 packages of sport cards. Each package has 24 cards. Use compatible numbers to estimate about how many cards Larry has.
100 x 25 = 2,500 cards