Multiplying by powers of 10
Write the product of 435.1 x 0.01 in standard form.
4.351
7.2 x 6
43.2
12.71 x 32
406.72
75.3 x 0.42
31.626
$0.01
Write the product of 67.89 x 10 in standard form.
678.9
19.54 x 3
58.62
15.98 x 61
974.78
29.5 x 1.3
38.35
$0.90 x 0.1
$0.09
Write the product of 3.27 x 102 in standard form.
327
59.8 x 3
179.4
Aaron buys postcards while on vacation. It cost $0.28 to send one postcard. Aaron wants to send 12. How much is it going to cost Aaron to send all 12 postcards?
$3.36
Tiffany catches a fish that weighs 12.3 pounds. Frank catches a fish that weighs 2.5 times more than Tiffany's fish. How much does Frank's fish weigh?
12.3 x 2.5 = 30.75 pounds
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The store ran out of pancake mix. It placed an order for 1,000 boxes. Each box cost $2.59. How much did the order of pancake mix cost the store?
$2,390
Megan is making a square fence. Each side is 18.45 feet long. How much fencing does she need in all?
18.45 x 4 = 73.80 OR 73.8
Jess is on the school swim team. She swims 1.25 miles every day after school. If she practices every day for three school weeks, how many miles will she have swam?
1.25 x 15 = 18.75
Last week John worked 20.5 hours. This week he worked 1.5 times as much as he did last week. How many hours did John work this week?
20.5 x 1.5 = 30.75 hours
It costs $13.72 for an adult zoo admission, $6.45 for a child zoo admission, and $8.93 for a pretzel. Tyler bought 2 adult zoo admission, 1 child zoo admission, and 1 pretzel. How much did he spend at the zoo?
$13.72 x 2 = $27.44
$27.44 + $6.45 + $8.93 = $42.82
65.8 x 1
65.8 x 0.1
65.8 x 0.01
65.8
6.58
0.658
Hunter and his girlfriend take pictures in a photo booth. To take 4 pictures it cost $5.25. If you want to add a design it costs $2.50. They take 8 pictures all together, and add a design to one of the prints. How much did Hunter spend on pictures?
$5.25 x 2 = $10.50
$10.50 + $2.50 = $13.00
Anna goes to the store and buys 13 packs of gum. Each pack of gum cost $2.89. She gives the cashier $40.00. How much change will she get back?
13 x $2.89 = $37.57
$40.00 - $37.57 = $2.43
Sue buys material to make a costume. She buys 1.75 yards of red material. She buys 1.2 times as many yards of blue material. How much material did she buy in all?
1.75 x 1.2 = 2.1
1.75 + 2.1 = 3.85
Kelly buys matching sweaters for her and her 2 best friends. Each sweater costs $17.79. She also bought 2 pairs of pants for $22.50 each. How much did Kelly spend all together?
$17.79 x 3 = $53.57
$22.50 x 2 = $45.00
$53.57 + $45.00 = $98.57