Happy Halloween! Today’s eight number teasers include two sequences, some candy math and a few coin puzzles. Everything can be solved in your head, so there’s no need to reach for a calculator.
Type a number as your answer. Units are not needed.
3, 9, 27, 81, ?
1, 2, 6, 24, 120, ?
12 trick-or-treaters each get 5 pieces of candy. How many pieces is that in all?
How many days are there from Halloween (October 31) to Christmas Day (December 25)?
A bag holds 3 quarters, 4 dimes and 5 nickels. How many cents is that?
Pumpkins cost $7 each. You buy 4 and use an $8 coupon. How many dollars do you pay?
Double a number, then add 10, and you get 76. What is the number?
Trick-or-treating starts at 6:00 p.m. and lasts 90 minutes. What time does it end?
New puzzles every day. Try another one »
How to Play
- Type just the number, for example 32. For a time, type it like 7:30.
- Tap Check to see if you are right. Tap Hint for a nudge.
- Tap Show answer if you would like to reveal one.
- Your progress is saved on this device.
A Tip for Word Problems
Underline the numbers and circle the question, so you know what you are solving for. Do the multiplying before the subtracting when prices and coupons are mixed. If a problem has steps, jot each one down so you can check your work.