Rounding Decimals
Round 30.92 to the nearest whole number
31
Estimate 22.4 - 16.2
About 5
Show me 0.22 with place value blocks
see whiteboard
What is the sum of 2.65 + 3.78?
6.43
If my total is 28 and one part is 15 what is the remaining part in my bar diagram?
15 (see whiteboard)
Round 905.255 to the nearest hundredth
905.26
Estimate 15.01 - 4.4
11
Show me 2.88 with place value blocks
See whiteboard
What is 82.7 - 5.59?
77.11
If I have $2.50 and $1.00 and I get $3.50 what is my total? Represent what I have with a bar diagram
Total of $7 (see whiteboard)
Thomas completed a running race in 15.839 seconds. What is this number rounded to the nearest tenth?
15.8 seconds
Estimate 80.01 + 2.89
83
Show me 0.88 + 0.25 with place value blocks
1.13 (see whiteboard)
Lawrence spent $1.89 on a bottle of paint and $0.45 on a brush. What was the total amount he spent?
$2.34
For her birthday Lucy received $20 from her aunt, $15 from her grandmother and $32 from her cousins. How much birthday money did Lucy receive?
Represent as a bar diagram
She received $67 (see whiteboard)
Kayla's dollhouse has 15.15 square feet downstairs and 6.45 square feet upstairs. What is the estimated total area if you round the decimals to the nearest tenth?
21.7
Martha bought an apple for $0.89 and a drink for $1.95. Which is the best estimate of how much money she spent?
$3.00
Show me 0.52 - 0.19 with place value blocks
0.33 (see whiteboard)
DOUBLE JEOPARDY:
Ed is training for a race. He ran 12.56 miles on one day, 12.98 miles the second, and 13.04 miles the third day.
What is the combined distance for the first three days?
How much farther did he run the second day than the first day?
He ran 38.58 miles
He ran 0.42 miles farther on the second day
Luz Maria has $15. She buys a ticket to a movie for $9.50 and a smoothie for $2.85. How much money does she have left?
Represent your answer with a bar diagram.
Kassandra has a rectangular patio in her backyard. The patio is 12.74 meters long and 5.45 meters wide.
Round the length and the width to the nearest whole number.
13 meters and 5 meters
Estimate the sum of $12.15, $16.85 and $1.74 by rounding each number to the nearest tenth.
$30.80
Show me 2.88 - 0.59 with place value blocks
2.29 (see whiteboard)
DOUBLE JEOPARDY: Amber bought a hardcover book for $23.70 and a paperback for $6.91. How much did she spend in all?
If she paid with 2 twenty-dollar bills, how much change did she get?
$9.39 in change
Jeffrey earned $65 doing yard work. He bought a pair of jeans for $31.25 and a sweatshirt for $16.50. He set aside the money left from his shopping trip to buy a gift for his cousin. How much money did he set aside for the gift?
Represent your answer as a bar diagram.
He set aside $17.25 for the gift (see whiteboard)