Ruchi's Math

Addition

100

2+1

3

200

8+6

14

300

54+34

88

400

56 + 27

83

500

1000+200,000,000,000

200,000,001,000

Subtraction

100

7 - 3

4

200

15 - 8

7

300

96 - 23

73

400

32 - 4

28

500

777-77

700

Multiplication

100

5 x 6

30

200

7 x 4

28

300

3 x 2 x 2

12

400

2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 0

0

500

9 x 6

54

Backwards Multiplication

100

6 times what equals 6
6 x __=6

1

200

7 times what equals 21
7 x __= 21

3

300

4 times what equals 32
4 x __ = 32

8

400

9 times what equals 36
9 x __= 36

4

500

6 times what equals 48
6 x __= 48

8

Puzzles

100

I am not 9. I am not 8. I am less than both. But think carefully, I am a number that looks like another, but upside down. What number am I?

6

200

I am a number who has traveled far and wide to find my top hat. But now that I have found it, I cannot wear it unless I stand in a weird, slanted position. I am also known to be a lucky number. What number am I?

7

300

I am between 10 and 20. I am not an even number. The number 5 can be multiplied a few times to get me. What number am I?

15

400

I am between 20 and 30. I am an even number. The number 8 can be multiplied a few times to get me. What number am I?

24

500

I am between 30 and 40. I am not an even number. The number 7 can be multiplied a few times to get me. What number am I?

35