정수와 유리수 연습문제 — OpenStax Prealgebra · 3.4절 · 1번

OpenStax Prealgebra · 3.4절 · 1번우리말 번역

다음을 각각 곱하세요:

영어 원문 보기

Multiply each of the following:

정답·풀이 보기

원본 교재 풀이(영어)


ⓐ
	$-9\cdot 3$
Multiply, noting that the signs are different and so the product is negative.	$-27$


ⓑ
	$-2(-5)$
Multiply, noting that the signs are the same and so the product is positive.	$10$


ⓒ
	$4(-8)$
Multiply, noting that the signs are different and so the product is negative.	$-32$


ⓓ
	$7\cdot 6$
The signs are the same, so the product is positive.	$42$

한 번 더 — 비슷한 문제OpenStax Prealgebra · 3.2절 · 20번우리말 번역

$\text{When}\,y=-9,\,\text{evaluate}\,$

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