Question

Find each or the following products: ( i)(-18)×(-10)×9

Answer 1

Solution:

We have to find the product of (-18)×(-10)×9.

☞ -18 × -10 × 9

☞ 180 × 9

☞ 1620

Another Method:

(-18)×(-10)×9.

☞ -18 × -90

☞ 1620

Therefore, Product of (-18)×(-10)×9 is 1620.

Answer 2

Concept: Integer multiplication, or simply integers, is the act of repeatedly adding both positive and negative numbers. The following scenarios must be considered while dealing with the issue of integer multiplication:

• two positive numbers multiplied
• multiplying two negative numbers together
• multiplying one positive number to one negative number

Multiplication of integers is fairly similar to multiplication of other numbers. However, since integers work with both positive and negative numbers, as we saw in the last section, there are a few guidelines or requirements to keep in mind when multiplying integers. Let's examine the procedures for multiplying numbers.

1. Find the numbers' absolute values as a first step.
2. Find the product of the absolute values in step two.
3. As soon as the item has been obtained, decide on the number's sign in accordance with the regulations or requirements.

Given: (-18) × (-10) × 9

To find: the product of (-18) × (-10) × 9

Solution:

A negative integer multiplied by a negative integer gives a positive integer.

Therefore, (-18) × (-10) × 9 = +1620

Hence, the product of (-18) × (-10) × 9 is 1620.

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