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2 dígitos por 1 dígito
2 dígitos por 2 dígitos
3 dígitos por 1 dígito
Forma desarrolada
Retos
100

73 x 10 = 

What is 730?

100

25 x 20 =

What is 500?

100

306 x 4 =

What is 1,224?

100

45

40+5

100

(12X12)+(4x4)

160

200

19 x 20 =

What is 380?

200

16 x 40 =

What is 640

200

630 x 2 =

What is 1260?

200
788

700+80+8

200

(14x10)+(13X10)

270

300

32 x 90 =

What is 2880?

300

Hola. 

¡Hola!
300

700 x 3 = 

What is 2100?

300

1,472

1,000+400+70+2

300

Verdadero o falso: 

32+32=2x2x2x2x2x2

Verdadero 

64=64

400

66 x 30 =

What is 1980?

400

98 x 28 =

What is 2,744?

400

121 x 5 =

What is 605?

400

13,001

10,000+3,000+1

500

57 x 30 =

1,710

500

99 x 99 =

What is 9,801?

500

333 x 5 =

What is 1,665?

500

49,611

40,000+9,000+600+10+1