GCF & LCM
Find the GCF of 6 and 9.
3
What is the equivalent ratio?
60: 1
___ : 2
120: 2
5/6 divided by 5/7
1 1/6
Which is larger, 3.5 or 4.5?
4.5
Is 35 divisible by 5?
Yes! 35 / 5 = 7
Find the LCM 12 and 6.
12
Alyssa's family is staying at the lake house this weekend for a family reunion. She is in charge of making pancakes for the entire group. The pancake mix requires 2 cups of flour for every 10 pancakes.
Write a ratio to show the relationship between the numbers of cups of flour and the number of pancakes made.
2:10
1/2 divided by 3/4
2/3
Which is smaller, -8 or -7?
-8
Is 128 divisible by 4?
Yes! 128 / 4 = 32
Find the GCF of 24 and 36.
12
Which ratios are equivalent to 7:15 (there is more than one correct answer)?
a. 21:45
b. 14:45
c. 3:5
d. 63:135
a. 21:45
d. 63:135
2/3 divided by 1/2
1 1/3
Which is larger, 24.9 or 23.5?
24.9
Is 133 divisible by 9?
No, it is not divisible. In order for it to be divisible, the sum of the digits would have to be divisible by 9.
1 + 3 + 3 = 7 , which is not divisible by 9.
Find the GCF of 50 and 55.
5
A middle school has 900 students. 1/3 of the students bring their own lunch instead of buying lunch at school. How many students bring their own lunch?
300
3/4 divided by 1/4
3
Which is smaller, 5 1/3 or -5 1/3?
-5 1/3
Is 565 divisible by 10?
No, it is not divisible by 10. In order for it to be divisible by 10, the number would have to end with 0.
Find the LCM of 9 and 19.
171
Max and Sheila are making juice. Max mixed 15 cups of water with 4 cups of juice concentrate. Sheila mixed 8 cups of water with 3 cups of concentrate. Whose beverage has the higher juice concentrate-to-water ratio?
Sheila has a higher juice concentrate-to-water ratio.
1 2/3 divided by 3/4
2 2/9
Which is larger, -367 or -376?
-367
Is 1,101 divisible by 3?
Yes! 1,101 is divisible by 3 because 1+1+0+1 = 3 , which is a multiple of 3.