Kuis a ) 80 × 2 =b ) 409 × 2 +250 =gampang kan?​

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Kuis a ) 80 × 2 =b ) 409 × 2 +250 =gampang kan?​

[ Bilangan Bulat ]

a ) 80 × 2 =

  • = 80 + 80
  • = 160

b ) 409 × 2 + 250

  • = 818 + 250
  • = 1068

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yzorq2_∫

Gambar Jawaban

a) 80 × 2

= (8 × 10) × 2

= (8 × 2) × 10

= (8 + 8) × 10

= 16 × 10

= 160

b) 409 × 2 + 250

= (409 × 2) + 250

= [(400 + 9) × 2] + 250

= [(400 × 2) + (9 × 2)] + 250

= [(4 × 100 × 2) + 18] + 250

= [(4 × 2) × 100] + 250 + 18

= (8 × 100) + 268

= 800 + 268

= 1.068