Happy Saturday! Today’s eight number teasers need nothing but a little mental arithmetic, and a pencil if you like. Answers are numbers (or one short word), so just type what you find.
Type each answer; no calculator needed.
What comes next? 4, 8, 16, 32, ?
What comes next? 7, 14, 21, 28, ?
A pie is cut into 8 slices. Three friends each eat 2 slices. How many slices are left?
You have 3 quarters and 2 dimes. How many cents is that in all?
This year Halloween falls on a Saturday. What day of the week is two days later?
Which word makes this true? 15 ___ 6 = 21 (plus, minus, times, or divided by)
A movie starts at 7:15 and lasts 2 hours 30 minutes. When does it end?
A bus has 40 seats. 26 are taken. How many seats are empty?
New puzzles every day. Try another one »
How to Play
- Read each question and type your answer as digits, such as 64.
- Press Check to test it, Hint for a nudge, or Show answer to see the working.
- Your progress is saved on this device.
Make Hard Sums Easy
Break a number into friendly pieces. For 40 minus 26, take away 20 to reach 20, then take away 6 more. Round numbers like 10 and 25 are your best friends.