1) 8 × 53 × (-25) = ? 2) 40 × 515 = ? (Gunakan sifat distributif) 3) 286 × 63 = ? (Taksirlah) 4) 36.372 : 91 = ? (Taksirlah)

1)

8 × 53 × (-25)

= 8 × (-25) × 53

= -200 × 53

= -10.600

2)

40 × 515

= 40 × (500 + 10 + 5)

= (40 × 500) + (40 × 10) + (40 × 5)

= 20.000 + 400 + 200

= 20.600

3)

Taksiran 286 = 300

Taksiran 63 = 60

286 × 63 → 300 × 60 = 18.000

4)

Taksiran 36.372 = 36.000

Taksiran 91 = 90

36.372 ÷ 91 → 36.000 ÷ 90 = 400