Show:
multiplying by 1
multiplying by 2
multiplying by 5
multiplying by 10
multiplying by 11
100

1x9=

1x9=9

100

2x6=

2x6=12 or 6x2=12

100

5x5=

5x5=25

100

10x8=

10x8=80

100

11x9=

11x9=99


200

1x1=

1x1=1

200

2x8=

2x8=16 or 8x2=16

200

5x4=

5x4=20 or 4x5=20

200

10x9=

10x9=90


200

11x6=

11x6=66

300

1x10=

1x10=10

300

2x10=

2x10=20 or 10x2=20

300

5x7=

5x7=35 or 7x5=35


300

10x6=

10x6=60 or 6x10=60

300

11x5=

11x5=55

400

1x4=

1x4=4

400

2x9=

2x9=18 or 9x2=18

400

3x5=

3x5=15 or 5x3=15

400

10x7=

10x7=70 or 7x10=70


400

11x1=

11x1=11

500

1x5=

1x5=99

500

2x7=

2x7=14 or 7x2=14

500

5x6=

5x6=30 or 6x5=30

500

10x10=

10x10=100

500

11x8=

11x8=845678