Adding Decimals
Find the sum of 5.7 + 3.2
8.9
TRUE OR FALSE: When adding and subtracting decimals, you should line up the decimals in the equation.
TRUE
TRUE OR FALSE: When multiplying decimals, you should line up the decimals in the equation.
FALSE
TRUE OR FALSE: When dividing decimals, it's okay to have a decimal in the DIVISOR.
FALSE; you should move the decimal to the right in the divisor until it is a whole number, and then move the decimal in the dividend the same number of times.
A ______ is something that evenly fits into a number. A ______ is a number multiplied by another number.
factor; multiple
Find the sum of 1.45 + 38.002
39.452
Find the difference of 9.4 – 6.8.
2.6
23.68
14 ÷ 0.4 =
3.5
Find the greatest common factor for 32, 48 and 160.
16
Andre’s vegetable garden is in the shape of a rectangle. The length of the garden is 2.8 meters and the width is 1.7 meters. What is the perimeter of Andre’s garden?
9 meters
Find the difference of 27.3 – 4.116
23.184
10.45 * 4.1 =
42.845
67.2 / 0.56 =
120
Payton calls her mom every 10 days. She calls her sister every 8 days. If Payton called both her mom and sister today, how many more days until she calls them both on the same day again?
40 days.
For a science experiment, Miguel measured 1.35 ounces of rock and 8.025 ounces of water and 0.649 ounces of sand. What is the combined weight of his mixture?
10.024 ounces
To train for her triathlon, Casey plans to bike 20.125 miles each week. So far this week, she has ridden 16.72 miles. How many more miles does she need to bike to reach her goal?
3.405 miles
Grace's cell phone company charges $0.39 per minute if she goes over her allotted minutes for the month. Last month she went over by 15 minutes. How much extra did she owe on the bill?
$5.85
Ari spent $181 on 5 video games. If the video games each cost the same amount, how much did each video game cost?
$36.20
Kyeron has 39 video games and 21 dvds. He wants to put them in equal-sized stacks but doesn’t want to mix them up. What are the biggest equal-sized stacks he can make that will use all his games and dvds?
3 equal-sized stacks.
Ryan started the week with $12.18. He earned $7.50 from doing chores, bought an item at the store that cost $9.95, and sold some baseball cards to a friend for $18.63. How much money did Ryan have after those transactions?
$28.36
You buy a meal at a cafeteria that costs $3.95. Your cousin’s meal costs $4.13. If you pay for both meals by using a $10 bill, how much change will you receive?
$1.92
Jaden bought 4.2 pounds of M&Ms. They cost $2.45 per pound. How much did he pay for the almonds?
$10.29
Merolla's pumpkin weighed 33.6 pounds. Rachel's pumpkin weighed 9.6 pounds. How many times heavier was Merolla's pumpkin than Rachel's pumpkin?
Merolla's pumpkin weighs 3.5 times as much as Rachel's.
Evan and Garrett worked out at the gym together today. Evan works out at the gym every 3 days. Garrett works out at the gym every 9 days. How many days until they both work out at the gym on the same day again?
9 days.