addition
Subtraction
multiplication
Shapes
Carrot method
100

109+87=

196

100

10-10=

0

100

1x1=

1

100

How many sides does a trapezoid

 has

4 sides


100

10+20+30+68=

128

700

1,000+900=

1,900

700

109-100=

9

700

12x50=

600

700

How many sides does a square have

4

700

926+64+2+2=

994

800

197+500=

697

800

2098-1000=

1,098

800

100x23=

2,300

800

Many sides does a triangle has

3

800

108+35+26+87=

256

900

860+1,900=

2,160

900

3,0000,900-3,0000,000=

900

900

12x57=

684

900

How many sides does a rectangle have?

4

900

809+675+10+10=

1,504

1000

1,098,900+100=

1,099,000

1000

67-25=

42

1000

90x10=

900

1000

How many times does pentagon have?

5


1000

100+465+367+190=

1,122

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