CAT4 Practice Pack — Grade 8

Answer Key — CAT4 Grade 8

1. 1. A — In the top row, the figure shrinks and the figure grows. Applying the same change to the bottom figure gives A. The others each make a specific mistake: B a look-alike that doesn't follow the rule; C copies the top row's result instead of transforming the bottom figure; D applies only one of the two changes; E applies a different rule than the top row shows.
2. 2. D — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives D. The others: A invents a mark neither design has; B keeps only the first design; C keeps only the marks the designs share; E the merged design slid one place.
3. 3. C — The relationship is "part to its whole." tooth → comb, so leaf → plant.
4. 4. C — These are square numbers: 1², 2², … Next is 5² = 25.
5. 5. A — In the top row, the figure doubles and the figure grows. Applying the same change to the bottom figure gives A. The others each make a specific mistake: B applies a different rule than the top row shows; C copies the top row's result instead of transforming the bottom figure; D applies only one of the two changes; E right change, wrong figure shape.
6. 6. B — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives B. The others: A invents a mark neither design has; C the merged design slid one place; D keeps only the second design; E loses one mark in the merge.
7. 7. C — The relationship is "part to its whole." tooth → comb, so petal → flower.
8. 8. B — These are square numbers: 3², 4², … Next is 7² = 49.
9. 9. B — In the top row, the figure's fill darkens one step and a smaller copy appears inside. Applying the same change to the bottom figure gives B. The others each make a specific mistake: A applies the change twice; C applies a different rule than the top row shows; D applies only one of the two changes; E the bottom figure with no rule applied.
10. 10. A — Lay one design over the other: every mark from both appears once. That gives A. The others: B invents a mark neither design has; C the merged design slid one place; D keeps only the second design; E loses one mark in the merge.
11. 11. D — The relationship is "part to its whole." room → house, so string → guitar.
12. 12. C — These are square numbers: 2², 3², … Next is 6² = 36.
13. 13. E — In the top row, the figure's fill darkens one step and the figure shrinks. Applying the same change to the bottom figure gives E. The others each make a specific mistake: A applies the change twice; B right change, wrong figure shape; C the bottom figure with no rule applied; D applies only one of the two changes.
14. 14. A — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives A. The others: B keeps only the first design; C invents a mark neither design has; D keeps only the marks the designs share; E the merged design slid one place.
15. 15. D — The relationship is "part to its whole." petal → flower, so page → book.
16. 16. A — The amount added grows by 1 each step. Adding 4 to 10 gives 14.
17. 17. A — In the top row, a smaller copy appears inside and the figure's fill darkens one step. Applying the same change to the bottom figure gives A. The others each make a specific mistake: B copies the top row's result instead of transforming the bottom figure; C applies the change twice; D the bottom figure with no rule applied; E applies a different rule than the top row shows.
18. 18. E — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives E. The others: A keeps only the second design; B the merged design slid one place; C keeps only the marks the designs share; D loses one mark in the merge.
19. 19. C — The relationship is "what it grows or turns into." tadpole → frog, so seed → plant.
20. 20. C — These are square numbers: 2², 3², … Next is 6² = 36.