Multiplying/Dividing by Powers of 10
Solve.
54,000 x 10
Answer:
540,000
Compare using <, >, =.
0.8 ___ 0.706
Answer:
0.8 > 0.706
0.8 is greater than 0.706
Solve. Use the area model or the standard algorithm.
3 copies of 4.65
Answer:
13.95
Solve.
4.236 ÷ 4
Answer:
1.059
Mr Lee distributed $126 equally among his 4 children for their weekly allowance.
How much money did each child receive?
Answer:
Each child will receive $31.5.
Solve.
54,000 ÷ 10 =
Answer:
5,400
Compare using <, >, =.
0.83 ___ 83 hundredths
Answer:
0.83 = 83 hundredths
0.83 is equal to 83 hundredths
Solve. Use the area model or the standard algorithm.
4 times as much as 20.075
Answer:
80.30 or 80.3
Solve.
1.324 ÷ 2 =
Answer:
0.662
Mr. Ortiz sells 8.542 pounds of donuts a day. How many pounds of donuts will he sell in 100 days?
Answer:
He will sell 854.2 in 100 days.
Solve.
0.13 x 100 =
Answer:
13
Compare using <, >, =.
Thirty-six and nine thousandths ___ 4 tens
Answer:
Thirty-six and nine thousandths = 4 tens
36.009 is less than 40
Solve.
Allan multiplied 8 × 4.3 and found a product of 32.24. Is Allan correct? Why or why not?
Answer:
He is incorrect.
The correct answer is 34.4 because
24.3
x 8
34.4
Solve.
9 ÷ 6 =
Answer:
1.5
For his parents’ anniversary, Danny spends $5.87 on a photo. He also buys a balloon for $2.49 and a box of strawberries for $4.50. How much money does he spend all together?
Answer:
$12.86
Solve.
4031.2 ÷ 100 =
Answer:
40.312
Arrange the numbers in increasing order.
3.049 3.059 3.05 3.04
Answer:
3.04, 3.049, 3.05, 3.059
Solve.
9 times as much as 7 tenths.
Answer:
6.3
9 x 0.7= 6.3
Solve.
91 ÷ 4 =
Answer:
22.75
A table and 8 chairs weigh 235.68 lb together. If the table weighs 157.84 lb, what is the weight of one chair in pounds?
Answer:
9.73lb
Solve.
12 tenths x 103 =
Answer:
1,200
Compare using <, >, =.
202 hundredths ___ 2 hundreds and 2 thousandths
Answer:
202 hundredths < 2 hundreds and 2 thousandths
2.02 is less than 200.002
Solve.
Mr. Arias incorrectly gave the product of 7 x 2.6 as 14.42
Use a place value chart or an area model to help Mr. Arias understand his mistake.
Six bakers shared 7.5 kilograms of flour equally. How much flour did they each receive?
Answer:
Each baker received 1.25 of flour.
Emma is 23 cm taller than Joey, and Joey is half the height of Elijah. If Elijah is 1.78 m tall, how tall are Emma and Joey? Express their heights in centimeters.
Answer:
Joey is 89cm tall.
Emma is 112cm tall.