Powers of 10 or Rounding
Express the missing divisor using a power of 10. Explain your reasoning on your whiteboard with a place value model.
7.53 ➗ ___ = 0.0753
10 to the power of 2
Round 5.267 to the nearest hundredth.
5.27
What is the remainder when you divide 13 by 4?
R. 1
What is 4.8 ÷ 10?
0.48
Sarah buys 4 notebooks for $1.25 each and a folder for $0.75. How much does she spend in total?
$5.75
Express the missing divisor using a power of 10. Explain your reasoning on your whiteboard with a place value model.
0.62 ➗ ___ = 0.00062
10 to the power of 30.62
Estimate the product of 9.8 and 3.3 by rounding each number to the nearest whole number.
10 X 3 = 30
Divide 47 by 5 and give the answer with the remainder.
9 r. 2
Calculate: 7.2 ÷ 6.
1.2
Emre has $12.50. He buys a toy for $6.75 and a snack for $2.50. How much money does he have left?
If you multiply 4.07 by 1,000, where does the decimal point move?
It moves 3 places to the right, making the answer 4,070.
A pencil costs $1.49, and a notebook costs $3.29. About how much will it cost to buy 3 pencils and 2 notebooks?
$10
Round $1.49 to $1.50 and $3.29 to $3.30. Then estimate: (3 × $1.50) + (2 × $3.30) = $4.50 + $6.60 = $10 (approximately)
Sandra has 53 candies and wants to share them equally among 6 friends. How many candies will each friend get, and how many are left over?
8 candies each, with 5 left over
(53 ÷ 6 = 8 R5)
How much is 32.4 ÷ 0.1?
324
The Solana Highlands bus drives 45.6 miles each day for 5 days to pick up students. On the last day, it also makes an additional 10-mile trip for a field trip. How many miles does it drive in total?
238 miles
What is the result of 35.6 ÷ 100?
0.356
Estimate the difference between 72.4 and 29.8 by rounding both numbers to the nearest ten first.
70 - 30 = 40
A farmer divides 95 apples equally among 8 baskets. How many apples are in each basket, and what is the remainder?
11 apples each, with 7 left over
(95 ÷ 8 = 11 R7)
Divide 6.75 by 0.5.
13.5
Shrek's family drove 234.8 miles to visit her grandparents and then drove 100.2 miles to a beach before returning home. How many miles did they drive in total?
670.0 miles
what number is 1,000 times smaller than 542?
0.542
A runner jogs 8.35 miles each day for 6 days. Estimate the total distance run by rounding to the nearest whole mile before multiplying.
8 miles × 6 = 48 miles
Divide 126 by 11 and give the answer as a quotient and remainder.
11 R5
(126 ÷ 11 = 11 R5)
A ribbon measures 18.6 meters and is cut into 3 equal pieces. How long is each piece?
6.2 meters
Valentina's bakery sells 8.4 pounds of flour every day. Over a 7-day week, they sell twice as much on the weekend days (Saturday and Sunday) as they do on the weekday days. How many pounds of flour do they sell in total over the week?
67.2 pounds
Solution: (8.4 × 5) + (8.4 × 2 × 2) = 42 + 33.6 = 75.6 pounds