預習答案

預習答案

7th Grade

23 Qs

quiz-placeholder

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預習答案

預習答案

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Medium

Created by

hang ku

Used 2+ times

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23 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

p14 兩數相乘,同號得_

2.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

p14 兩數相乘,同號得正,異號得_,且積的絕對值等於乘數的積的絕對值

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

任何數與0相乘,都得_

0

1

-1

2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

乘積是_的兩個數互為倒數

0

1

-1

2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1

0

a

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

p16 兩個數相乘,交換乘數的位置,積不變,即ab=

a(bc)

(ab)c

abc

ba

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

三個數相乘,先把前兩個數相乘,或者先把後兩個數相乘,積不變,即(ab)c=

a(bc)

(ab)c

abc

ba

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