Soalan 1:
Selesaikan setiap yang berikut:
(a) –6 × (–3)
(b) –7 × 2
(c) 4 × (–8)
(d) 8 × (–6)
(e) –12 ÷ 3
(f) –18 ÷ (–6)
(g) 15 ÷ (–5)
(h) –20 ÷ 4
Penyelesaian:
(a)
$$ \begin{aligned} -6 \times(-3) & =+(6 \times 3) \\ & =18 \end{aligned} $$
(b)
$$ \begin{aligned} -7 \times 2 & =-(7 \times 2) \\ & =-14 \end{aligned} $$
(c)
$$ \begin{aligned} 4 \times(-8) & =-(4 \times 8) \\ & =-32 \end{aligned} $$
(d)
$$ \begin{aligned} 8 \times(-6) & =-(8 \times 6) \\ & =-48 \end{aligned} $$
(e)
$$ \begin{aligned} -12 \div 3 & =-(12 \div 3) \\ & =-4 \end{aligned} $$
(f)
$$ \begin{aligned} -18 \div(-6) & =+(18 \div 6) \\ & =3 \end{aligned} $$
(g)
$$ \begin{aligned} 15 \div(-5) & =-(15 \div 5) \\ & =-3 \end{aligned} $$
(h)
$$ \begin{aligned} -20 \div 4 & =-(20 \div 4) \\ & =-5 \end{aligned} $$
Selesaikan setiap yang berikut:
(a) –6 × (–3)
(b) –7 × 2
(c) 4 × (–8)
(d) 8 × (–6)
(e) –12 ÷ 3
(f) –18 ÷ (–6)
(g) 15 ÷ (–5)
(h) –20 ÷ 4
Penyelesaian:
(a)
$$ \begin{aligned} -6 \times(-3) & =+(6 \times 3) \\ & =18 \end{aligned} $$
(b)
$$ \begin{aligned} -7 \times 2 & =-(7 \times 2) \\ & =-14 \end{aligned} $$
(c)
$$ \begin{aligned} 4 \times(-8) & =-(4 \times 8) \\ & =-32 \end{aligned} $$
(d)
$$ \begin{aligned} 8 \times(-6) & =-(8 \times 6) \\ & =-48 \end{aligned} $$
(e)
$$ \begin{aligned} -12 \div 3 & =-(12 \div 3) \\ & =-4 \end{aligned} $$
(f)
$$ \begin{aligned} -18 \div(-6) & =+(18 \div 6) \\ & =3 \end{aligned} $$
(g)
$$ \begin{aligned} 15 \div(-5) & =-(15 \div 5) \\ & =-3 \end{aligned} $$
(h)
$$ \begin{aligned} -20 \div 4 & =-(20 \div 4) \\ & =-5 \end{aligned} $$