389.09 – 18.2
389.09 – 18.20 = 370. 89
|
INVERSE OPERATION
(Check up the subtraction)
370.89 + 18.20 = 389.09
| ||
67.9 x 13.4
909.86
|
804.03 x 0.2
160.806
| ||
1,459
R = 22
|
INVERSE OPERATION
(Check up the division)
1459 X 61 = 88,999
88,999 + 22 = 89,021
| ||
7,630
|
INVERSE OPERATION
(Check up the division)
7630 X 70 = 534,000
|
1
|
Jennifer had $30 to spend on herself. She spent 1/5 of the money on a sandwich, 1/6 for a ticket to a museum, and 1/2 of it on a book.
How much money does Jennifer have left over?
|
1/ 5 of 30 = 6
1/6 of 30 = 5
½ of 30 = 15
6+5+15 = 26
30 – 26 = 4
She has 4 euros left.
|
2
|
Martin bought three bags of candy with 75 pieces in each one.
He plans to divide all the candy evenly among seven friends.
How many pieces of candy will Martin have left for himself?
| 75 x 3 = 225 225 ÷ 7 = 32 R= 1 He will have 1 piece for himself |
3
|
65 bags of nuts are to be divided among 13 students. Each bag contains 15 nuts.
How many nuts will each student receive?
|
65 x 15 = 975
975 ÷ 15 =65 Each student will receive 65 nuts. |
4
|
Sophie works at a fast-food restaurant with one fryer. Each basket of fries takes 1.15 minutes to fry.
How long will it take her to fry 3 baskets of fries?
|
1.15 x 3 = 3.45
It will take her 3.45 minutes
|
5
|
Marta took a three-minute timed typing test. She typed 168 words.
What was her typing rate per minute?
| Her typing rate is 56 words per minute. |
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