the expression
5 × (12 − 6) ÷ 2
5 x 6 / 2
5 x 3
15
“the sum of 2 and 4 subtracted from 9”?
A. 2 + 9 − 4
B. 9 – 2 + 4
C. 9 − (2 + 4)
D. (2 + 4) – 9
C.
3,051 × 882
2,690,982
Maria is making a rectangular place mat that is 242 beads by 357 beads. How many
beads are needed to make the place mat?
86,394
8×(10−4)÷2
answer: 24
Which expression represents "the sum of 3 and 5 subtracted from 12"?
A. 3+12−5
B. 12−3+5
C. 12−(3+5)
D. (3+5)−12
C
1.7 x 55
93.5
To train for a marathon, Sarah ran 1.25 kilometers each day for 4 weeks. How many meters did she run in those 4 weeks?
Solution:
Calculate the total number of days:
4 weeks×7 days/week=28 days
Find the total distance in kilometers:
1.25 kilometers/day×28 days=35 kilometers
Convert kilometers to meters:
35 kilometers×1,000 meters/kilometer=35,000 meters Answer:
Sarah ran 35,000 meters in those 4 weeks.
6+(18÷3)×2
Solve inside the parentheses: 18÷3=6
Multiply: 6×2=12
Add: 6+12=18
answer 18
Which expression represents "the sum of 7 and 2 subtracted from 15"?
A. 15−(7+2)
B. (7+2)−15
C. 7+15−2
D. 15−7+2
A. 15−(7+2)
12.2 x 4
48.8
Mark hiked 0.92 kilometers every day for 2 weeks while preparing for a hiking trip. How many meters did he hike in those 2 weeks?
Solution:
Calculate the total number of days:
2 weeks×7 days/week=14 days
Find the total distance in kilometers:
0.92 kilometers/day×14 days=12.88 kilometers
Convert kilometers to meters:
12.88 kilometers×1,000 meters/kilometer=12,880 meters
Answer:
Mark hiked 12,880 meters in those 2 weeks.
7×(15−5)÷5
Answer 14
Which expression represents "the sum of 6 and 3 subtracted from 20"?
A. 6+20−3
B. 20−(6+3)
C. (6+3)−20
D. 20−6+3
The correct answer is B. 20−(6+3)
28.7 x 9
258.3
Anna's dog had five puppies! When Anna and her sister weighed all the puppies together, they weighed 6 pounds 10 ounces. Since all the puppies are about the same size, about how many ounces does each puppy weigh?
Solution:
Convert the total weight to ounces:
6 pounds×16 ounces/pound=96 ounces
Divide the total weight by the number of puppies:
106 ounces÷5=21.2 ounces
Answer:
Each puppy weighs about 21.2 ounces
9×(20−8)÷4
answer: 27
Which expression represents "the sum of 8 and 4 subtracted from 18"?
A. 18−(8+4)
B. 8+18−4
C. (8+4)−18
D. 18−8+4
The correct answer is A. 18−(8+4)
33.2 x 21
697.2
Jack's hamster had eight baby hamsters! When Jack and his friend weighed all the baby hamsters together, they weighed 5 pounds 8 ounces. Since all the baby hamsters are about the same size, about how many ounces does each hamster weigh?
Solution:
Convert the total weight to ounces:
5 pounds×16 ounces/pound=80 ounces
Divide the total weight by the number of baby hamsters:
88 ounces÷8=11 ounces
Answer:
Each baby hamster weighs about 11 ounces.