Division with Whole Numbers
Divide 1470 by 5
294
Divide 210.8 by 4
52.7
Justify the following problem by using inverse (opposite) operation:
1335 divided by 15 = 89
89 x 15 = 1335
I know my answer is 89. I used inverse operations to prove my quotient is 89 because 89 times 15 equals my dividend of 1335. This confirms that 89 is my quotient.
Julia wants to buy a bundle of games for $213. She plans to save $15 each month. How many whole months will it take to save enough to buy the games?
14.2 months
rounds up to 15 months
Divide 6538 by 7
934
Divide 915.6 by 12
76.3
Justify the following problem by using inverse (opposite) operation:
74.4 divided by 6 = 12.4
12.4 x 6 = 74.4
I know my answer is 12.4. I used inverse operations to prove my quotient is 12.4 because 12.4 times 6 equals my dividend of 74.4. This confirms that 12.4 is my quotient.
Susan wants to buy new telescope for $450. Julia saved $25 a month. How many years does it take for Susan to earn enough money to buy her telescope?
450 divided by 25 = 18 months
18 months divided by 12 = 1.5 years
Divide 13,962 by 13
1,074
Divide 688.2 by 37
18.6
Justify the following problem by using inverse (opposite) operation:
1459.2 divided by 32 = 45.6
45.6 x 32 = 1459.2
I know my answer is 45.6. I used inverse operations to prove my quotient is 45.6 because 45.64 times 31 equals my dividend of 1459.2. This confirms that 45.6 is my quotient.
750 divided by 25 = 30 months
Justify:
30 x 25 = 750
365
Divide 602 by 35
17.2
Justify the following problem by using inverse (opposite) operation:
437.46 divided by 23 = 19.02
19.02 x 23 = 437.46
I know my answer is 19.02. I used inverse operations to prove my quotient is 19.02 because 19.02 times 23 equals my dividend of 437.46. This confirms that 19.02 is my quotient.
Luke is saving money to buy a new Nintendo Switch for $290. He saves $25 a month from doing his chores. How many whole months will it take to save enough to buy the iPad? How many years will it take to save enough to buy the Nintendo Switch?
290 divided by 25 = 11.6 months
you must round to whole month, so he would need to save up for 12 months to buy the Nintendo Switch
12 months = 1 year
Divide 8,435 by 35
241
Divide 12,340 by 50
246.8
Justify the following problem by using inverse (opposite) operation:
201.888 divided by 36 = 5.608
5.608 x 36 = 201.888
I know my answer is 5.608. I used inverse operations to prove my quotient is 5.608 because 5.608 times 36 equals my dividend of 201.888. This confirms that 5.608 is my quotient.
Lucy is saving money to buy a microscope for $440.75. She saves $25 a month.
A. How many whole months will it take to save enough to buy the microscope?
B. What multiplication equation could be used to justify your solution?
C. How many years will it take to save enough to buy the microscope?
A. 440.75 divided by 25 = 17.63 which rounds to 18 whole months
B. 18 x 25 = 450 which is close to my dividend of 440.75
C. 18 months divided by 12 = 1.5 years