Multiply by 10
Multiply by 5
Place Value
Potpourri
Math Riddles
100

10x10=

100

100

5x5=

25

100

What place value is the 8 in?  7,897

Hundreds

100

23+34=

47

100

What weighs more a pound of feathers or a pound of rocks?

They weigh the same - both weigh a pound

200

70x10=

700

200

50x5=

250

200

What place value is the 2 in? 10,921

Tens

200

7x9=

63

200

How many times can you subtract the number 10 from 100?

1 - then you are subtracting it from 90

300

8x10=

80

300

25x5=

125

300

What place value are the 1's in? 11,043

Ten thousand and thousand

300

100-64=

36

300

How many months have 28 days?

12 - All the months have at least 28 days

400

100x10=

1000

400

25000x5=

125000

400

What place value is the 4 in?  100,049

Tens

400
Write this number in correctly - Ten thousand, four hundred and twenty seven

10,427

400

What did one math book say to the other?

"Man, I sure have a lot of problems."
500

275x10=

2750

500

5x55=

275

500

What place value is the 7 in? 1,999,999

Millions

500

If multiplication is repeated addition then division must be repeated _______________?

subtraction

500

If you multiply me by any other number the answer will always be the same.  Who am I?

Zero

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