Adding & Subtracting
Find the sum.
22,152 + 17,368
39,520
Find the product.
3,416 xx 7
23,912
What is the value of n?
3/4 = n/20
n = 15
3/4 = 15/20
Mike bought a new backpack for $12 and new pencils for $3. He paid with a $20 bill.
Does Mike have enough change from his $20 to buy a sandwich for $4?
Yes. He will get $5 in change from his $20 bill.
$12 + $3 = $15
$20 - $15 = $5
What is the value of n?
5 xx n = 15 xx 2
n = 6
Find the sum.
239,024 + 89,371
328,395
Find the product.
39 xx 17
663
What decimal is equal to the given fraction?
73/100
0.73 (seventy-three hundredths)
Sara started her own business walking and washing dogs. She charges $12 to walk each dogs and $20 to wash each dog. Over last weekend she walked 6 dogs and washed 3 dogs.
How much money did Sara make last weekend walking and washing dogs?
$132
6 x $12 = $72
3 x $20 = $60
$72 + $60 = $132
What is the value of n?
215 + 20 = 211 + n
n = 24
Find the difference.
31,059 - 2,742
28,317
Find the product.
23 xx 85
1955
Name the equivalent fraction that has a numerator of 21.
7/10
21/30
Last weekend the Titanic exhibit was on display. On Friday, 32 classes visited the exhibit. Three times as many classes visited on Saturday than on Friday.
How many classes IN ALL visited on both days?
128 classes
32 x 3 = 96 classes on Saturday
32 + 96 = 128 classes
What is the value of n?
8 xx 3 = 4 xx n
n = 6
8 xx 3 = 24 and 4 xx 6 = 24
Find the difference.
108,256 - 63,901
44,355
Find the quotient.
174 -:3
58
Compare these two fractions with the proper comparison symbol. > or < or =
5/6 square 2/3
5/6 > 2/3
Olivia went to the zoo to watch the monkeys. There were 37 monkeys swinging on vines and 26 monkeys sitting still. The rest of the monkeys were taking a nap.
If there are 100 monkeys in all, how many monkeys were taking a nap?
37 monkeys were taking a nap
Rachel had twenty dollars and her sister had four dollars.
How many times more money does Rachel have than her sister?
5 times more money
(20-:4)
Find the difference.
900,008 - 726,908
173,100
Find the quotient.
155 -: 5
31
Compare these two fractions with the proper comparison symbol. > or < or =
2/5 square 2/3
2/5 < 2/3
Emily reads 8 books over the summer. Five of the books have 10 chapters each, and the rest of the books have 9 chapters each.
What is the total number of chapters that Emily read over the summer?
77 chapters
5 books x 10 chapters = 50 chapters
8 books - 5 books = 3 books with 9 chapters
3 books x 9 chapters = 27 chapters
50 chapters + 27 chapters = 77 chapters
At school the new printer can print three pages in a minute. The old printer is five times as fast.
How many pages can the OLD printer print in one minute?
15 pages per minute
(3 x 5)