OLSAT Practice Pack — Grade 8

Answer Key — OLSAT Grade 8

1. 1. A — Each number is multiplied by 3. 54 × 3 = 162.
2. 2. B — Each step, the fill moves one step through the cycle (light to dark, then starting over). Continuing one more step gives B. The others: A jumps two steps ahead; C steps backward in the series; D the right step on the wrong shape; E repeats the last figure instead of stepping on.
3. 3. B — The relationship is "part to its whole." tooth → comb, so branch → tree.
4. 4. A — The amount added grows by 1 each step. Adding 6 to 17 gives 23.
5. 5. C — Each step, the figure turns a quarter-turn each time. Continuing one more step gives C. The others: A the right figure with the wrong fill; B jumps two steps ahead; D the right step on the wrong shape; E steps backward in the series.
6. 6. D — The relationship is "what it grows or turns into." puppy → dog, so caterpillar → butterfly.
7. 7. C — The amount added grows by 1 each step. Adding 4 to 8 gives 12.
8. 8. B — Each step, the figure turns a quarter-turn each time. Continuing one more step gives B. The others: A steps backward in the series; C repeats the last figure instead of stepping on; D jumps two steps ahead; E the right figure with the wrong fill.
9. 9. D — The relationship is "worker to their workplace." sailor → ship, so farmer → farm.
10. 10. D — The amount added grows by 1 each step. Adding 6 to 14 gives 20.
11. 11. C — Each step, the figure alternates big and small. Continuing one more step gives C. The others: A does not continue the series; B jumps two steps ahead; D the right figure with the wrong fill; E the right step on the wrong shape.
12. 12. D — The relationship is "worker to their workplace." chef → kitchen, so judge → court.
13. 13. C — Each number is multiplied by 3. 27 × 3 = 81.
14. 14. E — Each step, the figure alternates big and small. Continuing one more step gives E. The others: A repeats the last figure instead of stepping on; B does not continue the series; C the right step on the wrong shape; D the right figure with the wrong fill.
15. 15. D — The relationship is "part to its whole." finger → hand, so wheel → car.
16. 16. B — The amount added grows by 1 each step. Adding 6 to 13 gives 19.
17. 17. E — Each step, the figure turns a quarter-turn each time. Continuing one more step gives E. The others: A steps backward in the series; B jumps two steps ahead; C the right step on the wrong shape; D the right figure with the wrong fill.
18. 18. A — The relationship is "what it grows or turns into." seed → plant, so tadpole → frog.
19. 19. B — Each number is multiplied by 2. 16 × 2 = 32.
20. 20. D — Each step, the figure alternates big and small. Continuing one more step gives D. The others: A the right step on the wrong shape; B the right figure with the wrong fill; C does not continue the series; E repeats the last figure instead of stepping on.