Word problems
Alberto ran 15.6 km on Monday, 12.8 km on Tuesday, and 6.5 km on Wednesday. Dennis ran 11.25 km on Monday, 14.6 km on Tuesday, and 8 km on Wednesday. Who ran farther?
Alberto- 15.6 + 12.8 + 6.5 = 34.9
Dennis- 11.25 + 14.6 + 8 = 33.85
Alberto ran farther.
0.02 + 0.89 =
What is 0.91
0.6 x 12.8
7.68
4/28 or 1/7
What needs to be changed in order to divide decimals?
The divisor needs to become a whole number
Talia measured two strings. The green string was 2.37 cm long. The blue string was 4 cm long. How many centimeters longer was the blue string than the green string?
4.00 - 2.37 = 1.63
8.71 - 0.4 =
8.31
15.2 x 5.22
79.344
11/5 x 7/2 =
77/10 or 7 7/10
When you multiply decimals, how do you know where the decimal goes in the answer?
Count the number of place values used in the problem.
The length of Chen’s office is 12.5 feet and the width is 9.4 feet. Use the formula P = 2l + 2w to find the perimeter of the office.
What is 43.8 feet
98 + 3.79 =
101.79
5.12 X .003
What is 0.01536
2 1/3 x 3 2/5
119/15 or 23 4/5
How do you multiply mixed numbers?
Change the mixed numbers to improper fractions then multiply straight across
Mason has 1,970 pounds of berries. He sells 8 bushels, 20 boxes, and 35 bags. How many pounds of berries does Mason have left?
Bushels - 28.6 pounds per container
Boxes - 18.5 pounds per container
Bags - 7.5 pounds per container
What is 1,108.7 pounds left
51.92 - 28.003 =
23.917
788.68 divided by 2
394.34
4 1/2 x 2 3/8
171/16 or 10 11/16
When adding or subtracting decimals you need to?
Line up the decimals and place values
The What a Steal! Club sells donuts. Each 1/4 of a donut requires 0. 50 cup of flour. How much flour is needed for a full donut?
What is 2 cups of flour
205.4 - 99.7 =
105.7
86.52 divided by 4.2
20.6
3 1/6 x 2 3/4
209/24 or 8 17/24
When dividing decimals and there is a remainder, you can do this to keep dividing.
Adding a decimal and a zero