DIVISES EM CADEIA

Observa e completa

Sabendo que a metade de 36 18 (36:2=18), fcil calculares a quarta

parte de 36. Quanto ?

Utilizando a mesma estratgia calcula

Como pensaste?

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O que verificas?

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6:2= 12:6= 48:2= 400:5= 400:10= 40:20=

12:2= 24:6= 48:4= 200:5= 200:10= 40:10=

24:2= 48:6= 48:8= 100:5= 100:10= 40:5=

48:2= 96:6= 48:16= 50:5= 50:10= 40:2,5=

38:4= 120:4= 460:4=

68:4= 300:4= 820:4=

44:4= 288:4= 2040:4=

12:2= 24:2= 48:2=

12X0,5= 24X0,5= 48X0,5

DIVISES EM CADEIA

Sabendo que 600:2=300

Sabes calcular rapidamente a metade 640 640:2=

Como pensaste?

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E metade de 590 590:2=

Como pensaste?

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DIVISES EM CADEIA

DIVISES EM CADEIA