Ten free 8th grade word problems about chess, 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 chess.
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.
✦ Mathbloom · free worksheet
Chess Math
8th Grade · Two-step equations · Proportions · Percent increase and decrease · Simple interest · Adding and subtracting integers · Mean (average)
Name Date
Sam has $12 saved toward a trip to a big chess tournament. After adding the same amount each week for 7 weeks, Sam has $89. Solve 7x+12=89 to find x, the number of dollars added each week.
A.x=11
B.x=14.43
C.x=12.71
D.x=77
Sam plans tactics puzzles and endgame drills in a ratio of 5:3 for a training week. How many tactics puzzles go with 33 endgame drills?
Answer:
Last month, Sam had 20 chess puzzle cards. Now Sam has 30. What is the percent increase?
A. 33.33%
B. 10%
C. 50%
D. 25%
Sam put $700 of birthday and allowance savings into a savings account that pays 7% simple interest per year. How much interest will the money earn in 4 years?
Answer:
Sam keeps track of rating changes: -6 points after the first tournament and -8 points after the second tournament. What is the total change in rating?
Answer:
Here is how many blitz games Sam played in each of five weeks: 9, 14, 9, 1, 12. What is the mean number of blitz games per week?
Answer:
Sam has 30 puzzle cards in all: 6 loose puzzle cards plus 8 stacks with the same number of puzzle cards in each stack. If x is the number of puzzle cards in each stack, solve 8x+6=30.
A.x=3
B.x=4.5
C.x=3.75
D.x=24
Sam wins 1 out of every 2 games. At that rate, how many out of 8 games would Sam win?
Answer:
Last year, 120 players entered the club tournament. This year, Sam counted 150. What is the percent increase?
A. 20%
B. 30%
C. 25%
D. 12.5%
Sam's chess club raised $300 at a bake sale and put it in a savings account that pays 1% simple interest per year. How much interest will it earn in 3 years?
Answer:
The key always prints on its own page.
Answer key
Chess Math · 8th Grade
A. x=11Undothe+12first(subtractfrombothsides),thenundothe×7(dividebothsides):x=11.
55Cross-multiply:5×33=165,thendivideby3:x=55.
C. 50%Percentchange=(change÷original)×100=(10÷20)×100=50%.
196.00700×0.07×4=$196.00.
-14-6+-8=-14.
99+14+9+1+12=45,and45÷5=9.
A. x=3Undothe+6first(subtractfrombothsides),thenundothe×8(dividebothsides):x=3.
4Cross-multiply:1×8=8,thendivideby2:x=4.
C. 25%Percentchange=(change÷original)×100=(30÷120)×100=25%.
9.00300×0.01×3=$9.00.
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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 chess lesson for 8th grade with no sign-up.