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Mastering
AMC 10/12

Contest simulator

Practice the strategies from Chapter 45 like it's test day. Five stations, no pressure.

1. Answer eliminator

Real contest problems. Cross out choices with a reason before you solve, guess big cases from small ones, and use the freedom a problem gives you. Read the lesson

Answer eliminator: problem 1 of 17, 5 choices, quick checks can rule out 3 of the 4 wrong ones

Problem 1 of 17
AMC 10A · Problem 1.7.10

What is the number of ways the numbers from 1 to 14 can be split into 7 pairs such that for each pair, the greater number is at least 2 times the smaller number?

Step 1. Pick a reason chip, then tap a choice to cross it out.
Step 2. Solve, then lock in a survivor.
Right answer survived 0 of 0Final answers right: 0 · Good reasons: 0 of 0

Problem 1 of 17: 0 choices crossed out, 5 left. Reason chip: Parity.

2. Silly-mistake checklist

The six families of silly mistakes as a before-you-submit checklist, plus a reading-error trainer. Read the lesson

Before-you-submit checklist: 6 families, 19 checks; open: Arithmetic errors

0 of 6 families checked

0 of 6 mistake families checked

3. Time planner

Split your 75 minutes, take a 25-question mock test with a star-it-and-move-on button, and watch the replay. Read the lesson

Pace plan for 25 questions in 75 minutes: easy 2 min, medium 3 min, hard 4 min each, 5 min to review

Drag the three handles (or focus one and use the arrow keys) to split your 75 minutes.

1–1011–2021–25review0′15′30′45′60′75′
Q1–10
2 min each
Q11–20
3 min each
Q21–25
4 min each
Review
5 min
  • Nice plan: fast on 1–10, steady on 11–20, room for 21–25 and review.

Easy 2 min, medium 3 min, hard 4 min per question, 5 min review

4. Score planner

6 points right, 1.5 blank, 0 wrong: find the mix of answers and blanks that reaches your target, and when a guess beats a blank. Read the lesson

Score planner: 17 right, 0 wrong, 8 blank = 114 points (example target 105)

Right17
Wrong0
Blank8
Score: 114 / 150Reaches the target, with 9 points to spare.
105120075150

The defaults are the book's numbers (about 105, aim for 110+; 120 for USAJMO/USAMO). Cutoffs change every year, so check this year's and type them in.

Fewest right answers that reach 105

RightWrongBlankScoreUse
15010105
1618108
1627106.5
1636105
1744108
1753106.5
1762105

17 right, 0 wrong, 8 blank: score 114, reaches the target

5. Test-day card

Print it, tick it, and keep the dark chocolate handy. Read the lesson

Test-day card: The day before, Be relaxed, Guessing, When you're stuck, AMC 10/12 A and B (17 tips)

My AMC 10/12 test-day card
The day before
Be relaxed
Guessing
When you're stuck
AMC 10/12 A and B

Last, but most important: don't stress out too much! It's just a math contest, and you'll have many more chances.

0 of 17 test-day tips ticked