Adding and Subtracting Decimals
What is the sum of 14.5 and 2.82?
17.32
How many decimal places will be in the product of 0.4 × 0.2?
Two (0.08)
What is 12 ÷ 0.5?
24
Gas costs $3.50 per gallon. How much do 10 gallons cost?
$35.00
What is the most important step when adding or subtracting decimals?
Aligned the decimal points.
Calculate the difference between 10 and 3.45.
6.55
Solve 0.5 x 0.08.
0.04
To solve 1.5 ÷ 0.0.3, you can multiply both numbers by 100 to get what equivalent whole-number expression?
150 ÷ 3
You have $20 and spend $14.25. How much change do you receive?
$5.75
Use the partial quotients method to solve 496 ÷ 8.
62
True or False: When adding decimals, you must align the digits by their rightmost edge.
False (You must align the decimal points).
Calculate 1.2 × 4.5.
5.4
Solve 672 ÷ 12.
56
A box of 5 identical books weighs 8.5 pounds. How much does each book weigh?
1.7 pounds
If you multiply 0.08 by 6.3, how many decimal places will be the in the answer?
Three (0.504)
Find the value of 15.6 + 0.38 + 2.
17.98
Use the area model concept: What is the area of a rectangle with side lengths of 0.3 and 0.7?
0.21
Solve 4.8 ÷ 4.
1.2
A runner finishes a 5 kilometer race in 22.5 minutes. What was their average time per kilometer?
4.5 minutes.
To divide 1.2 ÷ 0.04, what power of 10 should you multiply both by to get whole numbers?
100 (results in 120 ÷ 4).
Solve 20.01 - 5.678
14.332
Find the product of 0.004 and 1.2.
0.0048
What is the quotient of 0.45 ÷ 0.009?
50
A snack bar sells popcorn for $0.75 per bag. If they make $60 in sales, how many bags did they sell?
80 bags.
No (Total is $10.05)