正負數的乘除與四則運算

正負數的乘除與四則運算

7th Grade

10 Qs

quiz-placeholder

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正負數的乘除與四則運算

正負數的乘除與四則運算

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Medium

Created by

陳 嘉卿

Used 789+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(-2)×|-1+3|-5=?

-13

-9

3

1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

36÷[(-4)+2]=?

6

18

-6

-18

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(-8)×(-2)+(-61)×0=?

0

16

25

-55

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

999×(-7)=?

7000

-7000

-6983

-6993

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

下列算式何者正確?

48÷8×(-2)=48÷〔8×(-2)〕

48÷8÷(-2)=48÷〔8÷(-2)〕

(48÷8)×(-2)=48÷〔8×(-2)〕

48×8÷(-2)=48×〔8÷(-2)〕

6.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

關於正負數四則運算的過程,正確的有哪些?

(-40)÷8×5=(-40)÷40=-1

8×(-20)÷(-10)=(-160)÷(-10)=16

50-2×(-75)÷|(-15)-10|=50+150÷25=200÷25=8

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

已知ab為任意數,且a×b>0,則下列敘述何者正確?

a>0時,b<0

a<0時,b>0

b<0時,a<0

b<0時,a>0

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