Ten free 8th grade word problems about dinosaurs, with an answer key. Type your kid's first name and every problem is about them; press "New problems" for a fresh sheet as often as you like.
This sheet mixes two-step equations, proportions, percent increase and decrease, simple interest, adding and subtracting integers, and mean (average) (8th-grade equation solving plus 7th-grade review). Each problem is built from a checked math template, so the numbers change every time but the answers are always right; only the story is about dinosaurs.
Print it, or let your kid work it on screen and check each answer as they go. No sign-up, and the name you type stays on your device.
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Dinosaur Math
8th Grade · Two-step equations · Proportions · Percent increase and decrease · Simple interest · Adding and subtracting integers · Mean (average)
Name Date
Sam has 46 fossil replicas in all: 2 loose fossil replicas plus 4 boxes with the same number of fossil replicas in each box. If x is the number of fossil replicas in each box, solve 4x+2=46.
A.x=11
B.x=12
C.x=11.5
D.x=44
Sam collects plant-eater cards and meat-eater cards in a ratio of 9:2. How many plant-eater cards go with 18 meat-eater cards?
Answer:
Last week, 120 visitors came to the dinosaur exhibit. This week, Sam counted 180. What is the percent increase?
A. 50%
B. 33.33%
C. 60%
D. 25%
Sam put $600 of birthday and allowance savings into a savings account that pays 2% simple interest per year. How much interest will the money earn in 1 year?
Answer:
Sam checked the temperature at the dig site. It was -1°C at sunrise. By noon, it had dropped 1 degree. What was the temperature at noon, in °C?
Answer:
Here is how many fossil bones Sam cleaned on each of five days: 5, 3, 4, 2, 11. What is the mean number of fossil bones per day?
Answer:
Sam has 63 fossil replicas in all: 3 loose fossil replicas plus 6 boxes with the same number of fossil replicas in each box. If x is the number of fossil replicas in each box, solve 6x+3=63.
A.x=10
B.x=11
C.x=10.5
D.x=60
Sam collects plant-eater cards and meat-eater cards in a ratio of 6:2. How many plant-eater cards go with 33 meat-eater cards?
Answer:
Sam's fossil club raised $400 at a bake sale and put it in a savings account that pays 4% simple interest per year. How much interest will it earn in 2 years?
Answer:
Sam checked the temperature at the dig site. It was 4°C at sunrise. By noon, it had dropped 5 degrees. What was the temperature at noon, in °C?
Answer:
The key always prints on its own page.
Answer key
Dinosaur Math · 8th Grade
A. x=11Undothe+2first(subtractfrombothsides),thenundothe×4(dividebothsides):x=11.
81Cross-multiply:9×18=162,thendivideby2:x=81.
A. 50%Percentchange=(change÷original)×100=(60÷120)×100=50%.
12.00600×0.02×1=$12.00.
-2-1+-1=-2.
55+3+4+2+11=25,and25÷5=5.
A. x=10Undothe+3first(subtractfrombothsides),thenundothe×6(dividebothsides):x=10.
99Cross-multiply:6×33=198,thendivideby2:x=99.
32.00400×0.04×2=$32.00.
-14+-5=-1.
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Questions parents ask
Are these worksheets really free?
Yes. Make, print, and play as many sheets as you like, no account and no card.
Is there an answer key?
Yes. It prints on its own page after the problems, and each answer comes with a short explanation.
Can I put my kid's name in the problems?
Yes. Type a first name and every problem uses it. The name is only used on this page in your browser; it is not sent anywhere or saved.
What does the 8th grade sheet cover?
Two-step equations, Proportions, Percent increase and decrease, Simple interest, Adding and subtracting integers, and Mean (average), a mix of 8th-grade equation solving and 7th-grade review. You can also pick a single topic for a focused sheet.
Can my kid do it on screen instead of paper?
Yes. "Play on screen" lets them answer each problem and see right away whether it is right, with a hint when it is not.
Is there more than worksheets?
Mathbloom builds whole interactive courses around what a kid loves. You can try a free dinosaur lesson for 8th grade with no sign-up.