Find each of the following products:
(a) $3\times(-1)$
(b) $(-1)\times225$
(c) $(-21)\times(-30)$
(d) $(-316)\times(-1)$
(e) $(-15)\times0\times(-18)$
(f) $(-12)\times(-11)\times(10)$
(g) $9\times(-3)\times(- 6)$
(h) $(-18)\times(-5)\times(- 4)$
(i) $(-1)\times(-2)\times(-3)\times4$
(j) $(-3)\times(-6)\times(-2)\times(-1)$

To do:

We have to find each of the given products.

Solution:

We know that,

$(+) \times (+) = (+)$

$(-) \times (-) = (+)$

$(+) \times (-) = (-)$

$(-) \times (+) = (-)$

Therefore,

By using the concept of multiplication of integers, we get,

(a) $3\times(-1)=-3$

(b) $-1\times225=-225$

(c) $-21\times(-30)=630$

(d) $-316\times(-1)=316$

(e) $-15\times0\times(-18)=0$

(f) $-12\times(-11)\times(10)=132\times10$

$=1320$

(g) $9\times(-3)\times(-6)=9\times18$

$=162$

(h) $-18\times(-5)\times(-4)=90\times(-4)$

$=-360$

(i) $-1\times(-2)\times(-3)\times4=2\times(-12)$

$=-24$

(j) $-3\times(-6)\times(-2)\times(-1)=18\times2$

$=36$

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Updated on: 10-Oct-2022

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