True/False
True
3.14 + 5.12 =
8.26
20.8 - 7.34=
13.46
12.46 + 3.8=
16.26
Maya bought a large oat milk latte for $5.75 and a blueberry muffin for $3.50. What was the total cost of her breakfast before tax?
$9.25
When adding and subtracting decimals, you always put the longer number on top.
False
14.73+15.1=
29.83
34.63 - 27.9=
6.73
4.5 - 3.79=
0.71
At the beginning of the month, a sunflower plant was 0.84 meters tall. By the end of the month, it had grown another 0.38 meters. How tall is the sunflower now?
1.22
When adding and subtracting decimals, you ignore the decimal points.
False
3 + 4.55=
7.55
Subtract 5.83 from 8.32
2.49
9.38 - 0.19=
9.19
Leo went to the store with a $20.00 bill. He bought a notebook for $4.25, a pack of pens for $6.10, and a ruler for $1.55. After paying for these three items, how much change should Leo receive?
$8.10
When adding and subtracting decimals you must line up your decimals.
True
17.82 + 3.66=
21.48
6 - 2.33=
3.67
2.13 + 0.9=
3.03
A three-person relay team is trying to beat a course record of 150.00 seconds. Racer 1 finished in 48.25 seconds. Racer 2 finished in 51.4 seconds. Racer 3 finished in 49.15 seconds. Did the team beat the record? By how many seconds did they win or lose?
Yes, by 1.2 seconds
When adding and subtracting decimals, which skill allows you to check whether your answer is reasonable?
Estimating!
1/2 credit if you said rounding b/c it is the first step in estimating!
11.7 + 2.81=
14.51
32 - 0.58 =
31.42
10.21 - 5.6=
4.61
A baker started the day with 12.5 kilograms of flour. In the morning, she used 3.75 kilograms for bread. In the afternoon, she used 4.2 kilograms for cookies. A delivery driver then dropped off a small bag containing 2.55 kilograms of fresh flour. How much flour does the baker have at the end of the day?
7.1 kilograms