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Division by 1 digit with no remainders
Estimating Quotients
Dividing with Zeros in the Quotient
Factors and Prime Factorization
Bonus Questions- Double Points!
100
128 / 4
What is 32?
100
810 / 2 State the fact and the estimate
What is 8 / 2 = 4 What is 400?
100
540 / 5
What is 108?
100
Factors of 6
What is 1, 2, 3, 6
100
David says that 1,032 is divisible by 2. Brad says it's divisible by 5. Who is correct? How do you know?
What is David is correct. 1,032 is an even number, and any even number is divisible by 2.
200
220 / 2
What is 110?
200
473 / 6
What is 48 / 6 = 8 What is 80?
200
912 / 3
What is 304?
200
Factors of 40
What is 1, 2, 4, 5, 8, 10, 20, 40
200
You have a collection of 45 buttons. You have a large display board, but you can't decide how you want to display them. You decide to come up with all of the possible arrays they could be displayed in. List all of the possible arrays for 45 buttons
What is 1 row of 45, 3 rows of 15, 5 rows of 9 ?
300
720,000 / 8
What is 90,000?
300
Use rounding to estimate the following: 323 / 6
What is 320 / 6 = 60?
300
816 / 4
What is 204?
300
The prime factorization of 20
What is 2 x 2 x 5
300
Prove that any number divisible by 6 has to be divisible by both 2 and 3.
Answers will vary. Example... 822 would work. I know this because the digits add up to 12. 822 / 2 = 411. 822 / 3 = 274 822 / 6 = 137
400
724 / 4
What is 181?
400
Four friends put their money together to go to a baseball game. They figured out that for all direct and indirect costs, the total bill for the day would be 238.68. If all four people pay the same amount, ABOUT how much money would each person have to contribute?
What is 24/ 4 = 6 240 / 4 = 60 Each person would have to kick in about 60 dollars.
400
547 / 5
What is 109 r. 2?
400
Factors of 63
What is 1, 3, 7, 9, 21, 63
400
Solve for variable b: 7b = 21
7b = 21..get b by itself by dividing both sides of the equation by 7. b = 3 Check...7 (x 3) = 21. It is correct.
500
828 / 9
What is 92?
500
7 friends collected coats for a winter clothing charity. In total, they collected 610 coats. If they each collected about the same amount of coats, what is a good estimate of how many coats each person collected?
What is 63 / 7 = 9 630 / 7 = 90 Each person collected about 90 coats.
500
776 / 7
What is 110 r. 6?
500
Prime Factorization of 500
What is 2 x 2 x 5 x 5 x 5