Free Printable 根式的運算

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根式的運算

Total questions: 10

Worksheet time: 16mins

Name

Class

Date

1.

下列敘述何者正確?

a)

√5＋√5＋√5＋√5可寫成5√5

b)

√3＋√2=√5

c)

√15 ÷ 3 = √5

d)

√2×√2×√2可寫成(√2)³

2.

(－2√13)×(－4)=?

a)

2√52

b)

8√13

c)

√13 / 2

d)

-2√52

3.

2√5×3√5=?

a)

5√5

b)

6√5

c)

6√10

d)

30

4.

a)

2

b)

3

c)

4

d)

5

5.

√2.4 = ?

a)

12 / 5

b)

1.2

c)

2√15 / 5

d)

4√15 / 5

6.

3√6 + 8√3 - 6√3 - 2√6

a)

3

b)

0

c)

2√3 + √6

d)

9√3 + 5√6

7.

a)

-14√5 / 5

b)

-2√3 / 5

c)

-√40 / 5

d)

-8√5 / 5

8.

a)

√3 / 12

b)

4√15

c)

3√3

d)

3√3 / 4

9.

a)

(2√2+√5)/2

b)

(4√2+2√5)/4

c)

(2√2-√5)/2

d)

(4√2-2√5)/4

10.

a)

1.54

b)

3.10

c)

0.49

d)

0.48

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