Multiplication
278 x 3
834
What is the greatest common factor of 12 and 15?
3
Estimate the product of 346 and 8.
2, 400
What is a prime number?
A prime number is a number that can only be divisible by 1 and itself.
Katie had $176 to spend on new tires. New tires cost $416.
How much more money does Katie need in order to buy new tires?
370 x 7
2,590
Find all of the factors of 64.
1, 64
2, 32
4, 16
8
Estimate the sum of 12, 091 and 16, 701.
29, 000
What is a composite number?
A composite number is a number that has two or more factors.
Sam had 56 cookies. He wanted to split them with his sister. How many cookies will each of them get?
28 cookies
787 x 9
7,083
Find all of the factors of 85.
1, 85
5, 17
Estimate the difference of 23, 561 and 2, 909.
21, 000
Find two prime numbers between 30 and 45.
BMS has an auditorium. Tracy is trying to figure out how many seats total there are. She counted 18 rows, and 13 columns. How many seats are there? Draw an array to show your answer.
Answer: 234
909 x 4
3,636
Find all of the factors of 132.
1, 132
2, 66
3, 44
4, 33
6, 22
11, 12
Find the product of 87 x 9. Then, estimate to check if your answer is reasonable. HINT: You should have 2 answers.
1. 783
2. 810
What is the least common multiple of 6 and 8?
24
4
6, 829 x 6
40, 974
Find all of the factors of 184.
1, 184
2, 92
4, 46
8, 23
What is the estimated quotient of 718 divided by 6. HINT: Round 718 to the nearest ten.
120
What is the sum of the first two multiples of 8?
24
Amy wanted a new puppy. Her mother told her that she needed $800 for a new puppy. If Amy already had $309 saved, how much more does she need in order to have enough for a new puppy?
$491