Adding Decimals
Compute the following sum.
0.027 + .004
0.031
7.2 - 3.67
3.53
Calculate 1.6 * 0.215
0.344
Use long division to find each quotient. Write your answer as a decimal.
99 / 12
8.25
Mai had $14.50. She spent $4.35 at the snack bar and $5.25 at the arcade. What is the exact amount of money Mai has left?
$4.90
Compute the following sum.
0.203 + 0.1
0.303
16 - 1.4
14.6
Use an area diagram to solve:
4.6 * 0.9
3.6 + .54 =4.14
(Show drawing on board)
Use partial quotient to solve:
1032/43
24
A large cheese pizza costs $7.50. Diego has $40 to spend on pizzas. How many large cheese pizzas can he afford? Explain or show your reasoning.
5 pizzas
Compute the following sum.
1.2 + 0.145
1.345
A student said we cannot subtract 1.97 from 20 because 1.97 has two decimal digits and 20 has none. Do you agree with his statement? Explain or show your reasoning.
Disagree. The number 1.97 is equal to 197 hundredths. 20 can be written as 20.00 or 2,000 hundredths. We can subtract 197 from 2,000 to get 1,803 hundredths, so 20-1.97 =18.03
Use an area diagram to solve:
16.5 * 0.7
11.55
Use partial quotient to solve:
2105/ 5
421
Tickets to a show cost $5.50 for adults and $4.25 for students. A family is purchasing 2 adult tickets and 3 student tickets. What is the exact cost?
$23.75
Complete the calculations so that each shows the correct sum.
1.036 +______ =4
2.964
Show how you could find the difference of 1 and 0.1978.
0.8022
Use vertical calculation to find the product.
5.4 * 2.4
12.96
Find the value of:
61.12 / 3.2
19.1
Chicken costs $3.20 per pound, and beef costs $4.59 per pound. Answer each question and show your reasoning.
Complete the calculations so that each shows the correct sum.
0.738 + _____ = 1
0.262
Complete the calculations so that each shows the correct sum.
0.5137 + ____ = 1
0.4863
A pound of blueberries costs $3.98 and a pound of clementines costs $2.49. What is the combined cost of 0.6 pound of blueberries and 1.8 pounds of clementines? Round your answer to the nearest cent.
$6.87
3.98*.6=2.388
2.49*1.8=4.482
2.39 + 4.48 =$6.87
A bag of pennies weighs 5.1 kilogram. Each penny weighs 2.5 grams. About how many pennies are in the bag?
2,000 pennies
Chicken costs $3.20 per pound, and beef costs $4.59 per pound. Answer each question and show your reasoning.