S601A 等差數列

S601A 等差數列

9th - 12th Grade

9 Qs

quiz-placeholder

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S601A 等差數列

S601A 等差數列

Assessment

Quiz

Mathematics

9th - 12th Grade

Practice Problem

Easy

Created by

khoot math

Used 3+ times

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9 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

下列何者是等差數列?

Which of the following is/are arithmetic sequence(s)?

2, 22, 222, 2222

2, 12, 22, 32

2, 0.2, 0.02, 0.002

2,2,2,2

Answer explanation

2, 22, 222, 2222:22-2=20,222-22=200,所以它不是等差數列。

2, 12, 22, 32:12-2 = 10,22-12 = 10,32-22 = 10,所以它是等差數列。

2, 0.2, 0.02, 0.002:0.2 -2=-1.8,0.0=2-0.2=-0.18,所以它不是等差數列。

2,2,2,2:2-2=0,2-2=0,2-2=0,所以它是等差數列。

2.

MATCH QUESTION

1 min • 2 pts

配對下列各項。Match the following.

公差=12

common difference=12

8,8,8,8

公差=2

common difference=2

-9,-5,-1,3

公差=4

common difference=4

12,24,36,48

公差=0

common difference=0

1,3,5,7

公差=-13

common difference=-13

52,39,26,13

3.

MATH RESPONSE QUESTION

1 min • 3 pts

若 5,x,19 是等差數列,則 x = ?

If 5,x,19 is an arithmetic sequence, then x=?

Mathematical Equivalence

ON

4.

MATH RESPONSE QUESTION

1 min • 2 pts

Mathematical Equivalence

ON

5.

MATH RESPONSE QUESTION

2 mins • 3 pts

某等差數列的第 12 項為 -300。若該數列的首項是 8,求公差。

The 12th term of an arithmetic sequence is -300. If the first term of the sequence is 8, find the common difference.

Mathematical Equivalence

ON

6.

DRAG AND DROP QUESTION

1 min • 1 pt

在數列 23,3,-17,-37 中,第 4 項 (the 4th term) 是 ​ (a)   ,首 4 項之和 (the sum of the first 4 terms) 是 ​ (b)   ​。

-37
-28
-20
80
23
3
-17

Answer explanation

首 4 項之和 = 23+3+-17+-37 = -28。

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

在等差數列一課中,下列何者正確?

In the arithmetic sequences, which of the following is/are correct?

Answer explanation

請看短片,或看教科書第 1 章。

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