OLSAT Practice Pack — Grade 5

Answer Key — OLSAT Grade 5

1. 1. B — A museum closed on Mondays forces the class to delay (postpone) the trip. An open museum would not.
2. 2. C — The relationship is "what it grows or turns into." bud → flower, so egg → chick.
3. 3. E — Four of the five words are alike: they are worn to protect the body. ball does not fit that group.
4. 4. B — Four of the five figures share one property: every figure is small AND has a dot above it (the shapes and fills vary). B is the one that does not belong (has the dot above it, but it is large).
5. 5. E — In this grid going across each row, the figure alternates large and small and the figure turns a quarter-turn clockwise at every step. The empty box must satisfy both its row and its column, which gives E. The others: A the right change on the wrong shape; B copies the far corner; C applies only one of the two changes; D repeats the figure directly above the empty box.
6. 6. C — In the top row, the figure doubles and the figure grows. Applying the same change to the bottom figure gives C. The others each make a specific mistake: A the bottom figure with no rule applied; B 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.
7. 7. A — Each step, the figure alternates big and small. Continuing one more step gives A. The others: B the right step on the wrong shape; C the right figure with the wrong fill; D repeats the last figure instead of stepping on; E does not continue the series.
8. 8. A — The pattern subtracts 7 each time. 25 − 7 = 18.
9. 9. C — In every group each number is 3 times the one before it. Applying the same rule to the last group gives 54: C.
10. 10. A — Across each row the numbers are multiplied by 3, and down each column they change by 5. The empty space must fit both its row and its column, which gives 225: A.
11. 11. C — A falling-apart (crumbling) lighthouse can be repaired (restored) rather than demolished. A new lighthouse would not face being torn down.
12. 12. D — The relationship is "action to its opposite." ask → answer, so float → sink.
13. 13. D — Four of the five words are alike: they are used for cooking on a stove. napkin does not fit that group.
14. 14. C — Four of the five figures share one property: all figures are the same shape AND the same fill (only the size and the dot vary). C is the one that does not belong (the same fill (only the size and the dot vary)).
15. 15. D — In this grid going down the rows the fill darkens one step, and going across the columns the figure alternates large and small. The empty box must satisfy both its row and its column, which gives D. The others: A follows the column rule but not the row rule; B the right shape with the wrong fill; C applies the change one time too many; E repeats the figure to the left of the empty box.
16. 16. B — In the top row, the figure shrinks and the figure doubles. Applying the same change to the bottom figure gives B. The others each make a specific mistake: A the bottom figure with no rule applied; C copies the top row's result instead of transforming the bottom figure; D applies a different rule than the top row shows; E applies only one of the two changes.
17. 17. 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 the right step on the wrong shape; C jumps two steps ahead; D the right figure with the wrong fill; E repeats the last figure instead of stepping on.
18. 18. B — The pattern subtracts 6 each time. 22 − 6 = 16.
19. 19. A — In every group the second number is the first squared, and the third is 4 more than the second. Applying the same rule to the last group gives 64: A.
20. 20. B — Across each row the numbers change by 1, and down each column they change by -2. The empty space must fit both its row and its column, which gives 8: B.