Terms
45 / 5 = 9
What is the divisor?
5 is the divisor as it is the number which is doing the dividing
Round and estimate 4,650 / 53.
Explain why
Various by student but 5,000/ 50 = 100
846 / 6 =
141
165 / 67 =
2 r 31
Charlie has $17 to spend on chocolate bars. Chocolate bars cost $3. How many chocolate bars can he buy with his money?
Answer and explain reminder
Charlie can only buy 5 as 5 x 3= 15.
He has $2 left over so we ignore the remainder as it isn't enough money to use for another bar.
Define quotient
The result or answer to a division problem
43, 687 / 836 =
Explain why
45,000 / 900 = 50
40,000 /800 = 50
5,075 / 25 =
203
921 / 48=
19 r 9
The homecoming game is next week, and the students want to hang banners around the school. The students want to put up 210 banners. The banners come in packs of 40. How many packs will the students need to buy?
6 as 210/40 = 5 r 10 but they need 210 banners so you need to round the remainder up so they have enough banners to hang
How do we know which number is the dividend
The number that is being divided or the biggest number in the problem during division
235,862 / 34 =
Explain
240,000 / 30 = 8000
1080 / 36 =
36
894 / 63 =
14 r 12
The school is buying extra lunches for their annual Field Day. Each lunch costs $14. How many lunches can the school purchase with $2120?
151 lunches
2120 / 14 = 151 r 6.
They cant spend more than what they have so you ignore the $6
How to do explain an answer and check your work while doing division?
Through multiplication
4,983 / 75 =
Explain
4,900 / 70 = 70
4,800 / 80 = 60
324 / 12 =
27
325 / 61 =
5 r 20
A baker makes 117 cookies for a sale. His boxes can fit 6 cookies each. Any cookies not in the box he gets to take home. How many cookies does he take home?
The answer is 3 cookies
117 / 6 = 19 r 3. So the baker makes 19 boxes and he has 3 left over to take home.
Define inverse operations
Inverse means the opposite. So in math, an inverse operation can be defined as the operation that undoes what was done by the previous operation.
Examples: division to multiplication
Multiplication to division
Addition to subtraction
Subtraction to addition
74,987 / 877 =
Explain
72,000 / 800 = 90
72,000 / 900 = 80
816 / 24 =
34
784 / 33 =
23 r 25
The Adams family are driving across the country. They want to drive an equal of miles each day. They plan to drive 689 miles in 17 days. How many miles would they drive each day?
40 10/17 miles is the answer
689 / 17 is 40 r 10. Since they want to drive an equal number of miles each day, they would include the remainder in distance traveled