division
subtraction
multiply
add
riddles
100

1 divided by 1

1

100

10-5

5

100

20x2

40

100

10+25

35

100

what can run but not walk

river

200

5 divided by 2

2.5

200

83-19

64

200

45x6

270

200

58+82

140

200

what has 88 keys

a piano 

300

20 divided by 16

1.25

300

97-69

28

300

270x9

2430

300

140+9764

9904

300

whats at the end of rainbow

the letter w

400

60 divided by 25

2.4

400

900-764

136

400

800x5

4000

400

85,463+9865

95,328

400

theres 2 in room and 1 in corner what is it

the letter o

500

1000 divided by 69

14.4

500

9000-10000

-1000

500

10,000x800

8,000,000

500

98765+56257297

56356062

500

what holds water and has holes 

a sponge 

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