Multiplication
7x8?
56
What is 40÷7?
Hint: there will be a remainder
5r5
Find the prime factorization of 50 using a factor tree.
2x5x5
(order does not matter)
Find the GCF of 24 and 40.
The GCF is 8.
Find the Least Common Multiple (LCM) 6 and 9.
The LCM is 18.
9: 9, 18, 27, 36
18x3?
54
37 ÷ 5?
7r2
Find the prime factorization of 18 using a factor tree.
2x3x3
Find the GCF of 25 and 30.
The GCF is 5.
Consider the number 9.
Is it prime or composite?
9 is composite, because 1x9 and 3x3.
56x8?
448
868 ÷ 14?
62
Find the prime factorization of 90 using a factor tree.
2x3x3x5
Find the GCF of 77 and 88.
The GCF is 11.
Determine if the two expressions are equivalent. 8(3+8) and 24+64
Yes, they are equivalent.
28x28?
784
592÷8?
74
Find the prime factorization of 120 using a factor tree.
2x2x2x3x5
Find the GCF of 16 and 40.
Use the distributive property to write an equivalent expression.
6(3+5)
(Hint: The arrows)
Acceptable answers:
6x3 + 6x5
48
18 + 30
6x8
139x3?
417
1650÷75?
22
Find the prime factorization of 360 using a factor tree.
2x2x2x3x3x5
Find the GCF of 48 and 66.
The GCF is 6.
Four classmates are frosting cupcakes for a school event. There are 6 trays of brownies, and each tray has 18 cupcakes on it.
One of the students drops a tray on the floor and 9 cupcakes have to be thrown out. How many cupcakes are left for the school event?
There are 99 cupcakes left.
(6x18)-9 = 99