Question

Decimals
Solve each problem.
1) A bakery used 4 cups of flour to make a full size cake. If
they wanted to make a cake that was 0.5 the size, how
many cups of flour would they need?
2) On Halloween 2 friends each received 0.1 of a pound of
candy. How much candy did they receive total?
3) Janet can read 3.40 pages of a book in a minute. If she read
for 3.22 minutes, how much would she have read?
4) A geologist had two rocks on a scale that weighed 3.3
kilograms together. Rock A was 0.1 of the total weight.
How much did rock A weigh?
5) Janet collected 4 times as many bags of cans as her friend.
If her friend collected 0.87 of a bag, how much did Janet
collect?
6) Each day a carwash used 4.70 liters of soap. After 2 days.
how much soap would they have used?​

Answer 1

Decimals

Step-by-step explanation:

1) Flour for one full size cake = 4 cups

Flour for 0.5 cake = 4 * 0.5 = 2 cups of flour.

2) Candies per person = 0.1 pound.

Total candies received by 2 friends = 2 * 0.1 = 0.2 pounds.

3) Janet reads 3.40 pages in one minute.

Number of pages read in 3.22 minutes = 3.22 * 3.40 = 10.948 pages.

So approximately 11 pages.

4) 2 rocks weighed 3.3 kg.

Weight of Rock A = 0.1 of total = 0.1 * 3.3 = 0.33 kg

5) Cans collected by friend = 0.87.

Cans collected by Janet = 4 times friend's collection = 4 * 0.87 = 3.48 bags.

6) Soap used by car wash per day = 4.70 liters

Soap used for two days = 2. * 4.7 = 9.4 liters.