Thursday means number teasers! Today’s eight puzzles mix a couple of sequences with everyday questions about muffins, movie times, coins and calendars. All of them can be worked out in your head, so put the calculator away and enjoy.
Work out each answer and type it in digits.
5, 10, 20, 40, ?
2, 5, 10, 17, 26, ?
15 + ? = 4 × 6. What's the missing number?
Muffins come in boxes of 6. Joan needs 40 muffins for the church breakfast. How many boxes must she buy?
A movie starts at 7:45 p.m. and runs 1 hour 50 minutes. What time does it end? (Type it like 8:15)
What is the fewest number of coins (quarters, dimes, nickels and pennies) that make exactly 80 cents?
A train leaves at 9:00 a.m. and travels at a steady 60 miles per hour. How many miles has it gone by 11:30 a.m.?
If the 1st of the month falls on a Monday, what is the date of the third Thursday?
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How to Play
- Type your answer as digits (for example, 12) and tap Check.
- Need a nudge? Tap Hint.
- Show answer explains how it works.
- Your progress is saved on this device.
A Mental-Math Tip
Break big steps into small ones. To find 2½ hours of travel, work out 2 hours first, then add half an hour. Rounding to an easy number and adjusting afterward is a trick that works for shopping totals, too.