Add and Subtract Decimals
50.90 + 0.26
51.16
6,927 divided by 19
364 R11
7/8 X 1/2
7/16
Find the reciprocal of 3/5
5/3
How do you determine where to place the decimal point in the product?
0.43 X 0.2 = 0.086
Start to the right of the product. Move left the same number of decimal places in the product as the total number of decimal places in the two factors.
51.37 + 1.8
53.17
2, 483 divided by 9
275 R8
2/5 X 1/12
2/60 or 1/30
1/9
The Bright 0 Shampoo Factory includes 1.078 ounces of vanilla oil in a 6.35 -ounce bottle of shampoo. How much of the bottle of shampoo is NOT vanilla oil?
5.272 ounces
20.7- 0.258
20.442
9.089 divided by 0.745
12.2
4 1/8 X 5 1/2
20; 363/16 or 22 11/16
6 divided by 2/3
18/2 or 9
Timothy has 5.5 pounds of popcorn and wants to package it equally in 50 bags. How can she use place-value reasoning to find the amount of popcorn to put in each bag?
The divisor, 50, is about 10 times as much as the dividend, 5.5. Kendra can annex a zero in the hundredths place of the dividend and divide by 5.50 by 50. Each bag receives 0.11 pound.
How many decimal places are in a decimal to the hundredths place?
Two
If a lizard can eat 45 ants per minute , how long would it take to eat 1,080 ants?
24 minutes
in Mrs. Molden's class 2/5 of her students play chess. Of the students who play chess , 5/6 also play sudoku. If there are 30 students in Mrs. Molden's class, how many play chess and sudoku?
10 students
3 divided by 1/4
12/1 or 12
Karly found a recipe for banana macadamia nut bread that uses 3/4 cup of macadamia nuts. If he wants to make only half of the recipe, how many cups of macadamia nuts should Karly use?
3/8 cup
What is the decimal place of 3 and twenty-five hundreds?
3.25
You and Bentley are paid $38.25 for doing yard work. You worked 2.5 hours and your friend Bentley worked 2 hours. You split the money according to the amount of time that each of you worked. How much was your share of the money? Explain
$21.25
Together, we worked 4.5 hours :$38.25 divided by 4.5 =$8.50 for each hour worked; $8.50 X 2.5= $21.25.
If 7/8 multiplied by 4/5, will the product be greater than either of the two factors? Explain.
No; When multiplying a fraction by a fraction, the product is always smaller than both fractions multiplied.
Sarafina needs pieces of ribbon that are 2/5 yard long to wrap gifts. How many gifts can she wrap from a ribbon that is 2 yards long?
5 gifts
It is estimated that one honeybee can make about 1 1/12 teaspoon of honey in it's lifetime. How many honeybees will it take to make 2 tablespoons of honey ?One tablespoon is equivalent to 3 teaspoons.
72 honeybees