🔢 Sequences

Write the difference (or the multiplier) between neighbors.

Example: 3, 6, 10, 15, 21, …
Differences: +3, +4, +5, +6. Next difference is +7. 21 + 7 = 28.
Example: 2, 4, 8, 16, … is multiplying by 2. Next is 32, not 18.

⚖️ Comparisons

HSPT often asks which is greater, or if they’re equal. Before you compute, estimate.