GCF
LCM
Adding Multi-Digit Decimals
Subtracting Multi-Digit Decimals
Multiplying Multi-Digit Decimals
100
Solve the puzzle from the clues.
Clue 1: We are two whole numbers less than or equal to 12.
Clue 2: Our least common multiple is 36.
Clue 3: Our greatest common factor is 1.
What two whole numbers are we?
4 and 9
100
What is the least common multiple of 5 and 10?
10
100
0.097 + 0.005 =
0.102
100
8.505 − 6.538 =
1.967
100
What is the product of 0.68 x 4.37?
2.9716
200
Chantel has 45 green balloons and 54 purple balloons to make into bunches for a school celebration. She wants each bunch to have the same number of each color balloon. What is the greatest number of bunches Chantel can make if she wants to use all of her balloons? How many purple balloons will she put in each bunch?
9 bunches with 6 purple balloons in each
200
What is the least common multiple of 6 and 24?
24
200
Is this equation true?
0.025 + 0.17 = 0.042
No
200
2.1 – 0.4
1.7
200
How could I represent the expression 0.039 x 0.48 as another expression with the same value?
39/1000 x 48/100
300
The GCF of 20 and another number is 4. Which of these could be the other number? Select all that apply.
A) 4
B) 8
C) 10
D) 20
E) 80
A) 4
B) 8
300
The least common multiple of 18 and 30 is 90.
True or False
True
300
Is this a true equation?
2.405 = 2.45
No
300
Find the difference 0.2 – 0.05.
0.15
300
About how many centimeters are in 6.25 inches if 1 inch is about 2.5 centimeters?
15.625 cm
400
Ignacio buys three types of fish. He buys 12 guppies, 9 mollies, and 15 swordtails. He plans to divide the fish between more than one fish tank. He wants to put the same number of each type of fish into each tank. How many tanks should Ignacio use? How many of each type of fish will be in each tank?
He should use 3 tanks.
There will be 4 guppies, 3 mollies, and 5 sword tails in each tank.
400
Iris takes her clothes to the laundromat every 6 days, and Eddie takes his clothes to the laundromat every 8 days. They both go to the laundromat today.
How many days pass until the next time Iris and Eddie take their clothes to the laundromat on the same day again?
24 days
400
A pitcher contains 3.85 L of milk. Anna adds 0.475 L of chocolate syrup to make chocolate milk. How many liters of chocolate milk are in the pitcher?
4.325
400
Claudia is playing a game on her phone. She finishes Level One in 20.341 s. She finishes Level Two 1.283 s faster than she finishes Level One. How many seconds does it take Claudia to finish Level One and Level Two?
39.399 seconds
400
A rice box is show. What is the surface area?
2(8x2.5) + 2(2.5x6.75) + 2(6.75x8)
2x20 + 2x16.875 + 2x54
40+33.75+108
181.75 square inches
500
Inés finds the greatest common factor and the least common multiple of 10 and 12. She then subtracts to find the difference between the LCM and the GCF. What is the difference?
GCF = 2
LCM = 60
The difference is 58.
500
A common multiple of 18 and 30 is 180.
True or False
True
500
Clare went to a concession stand that sells pretzels for $3.25, drinks for $1.85, and bags of popcorn for $0.99 each. She bought at least one of each item and spent no more than $10.
Could she have bought 1 pretzel, 1 drink, and 5 bags of popcorn?
No, she would be 5 cents over.
500
You need to be at least 39.37 inches tall (about a meter) to ride on a bumper car. Diego’s cousin is 35.75 inches tall. How many more inches will he need to grow before Diego can take him on the bumper car ride?
3.62 inches
500
What is the value of the expression 2ab-b+c, when a=9.84, b=1.3, and c=0.27?
2(9.84 x 1.3) - 1.3 + 0.27
2(12.792) - 1.3 + 0.27
25.584 - 1.3 + 0.27
24.554