Multiply Powers of 10
12 x 104
120,000
17 x 63
20 x 60= 1,200
54 x 9
486
4 x 338
1,352
Alexandra has collected 34 dolls. A toy store has 15 times as many dolls as Alexandra. How many dolls are in the toy store?
510 dolls
100 x 815
81,500
91 x 51
100 x 50= 5,000
76 x 59
4,484
205 x 36
7,305
A store received a shipment of 37 TVs valued at $625 each. What is the total value of the shipment?
$23,125
20 x 1,000
20,000
256 x 16
300 x 20= 6,000
47 x 302
14,194
289 x 16
4,624
Jessica saved $1,250 last year. Courtney saved 7 times as much as Jessica saved. Hoe much money did Courtney save last year?
$8,750
6,471 x 103
6,471,000
70 x 523
70 x 500= 35,000 OR 100 x 500= 50,000
604 x 55
33,220
157 x 98
15,386
Dr. Drake works about 178 hours each month. Which of the following is the best estimate of the number of hours she works in a year?
2,136 hours
300 x 106
300,000,000
45 x 806
50 x 800 = 40,000
7,133 x 42
299,586
1,364 x 57
77,748
Mr. Santo pays $150 a month for his phone bill. He gets paid $1,700 a month. How much will he have left after 6 months?
(1,700 x 6)-(150 x 6)= (10,200)-(900)= $9,300