Nikhilam Multiplication
Doubling & Halving
"Jenil" Multiplication
Squaring
Divisibility
100

The base must be a multiple of _____?

10.

100

15 x 14

210

100

37 x 42

1,554

100
Find the duplex: 92

36

100

What is the rule for 8?

Last three digits must be a multiple of 8. 

200

98 x 97

9,506

200

35 x 18

630

200

93 x 86

7,998

200

322

1,024

200
When dealing with larger numbers to check, what should the two numbers you get by splitting the number be?

Relatively Prime.

300

102 x 105

10710

300

65 x 24

1,560

300

204 x 718

146,472

300

842

7,056

300

Is 32,718 divisible by 21?

Yes. 

400

105 x 94

9,870

400

95 x 74

7,030

400

127 x 974

123,698

400

15832

2,505,889

400

74,697,364 by 42

No.

500

979 x 1016

994,664

500

85 x 46

3,910

500

3872 x 8216

31,812,352

500

84972

72,199,009

500

981,394,807,029,502,984,290,348 by 36

No.

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