Free Printable 平方根(square root)

1.

10の平方根を答えなさい。(当てはまるものを全て選ぶ)

a)

10

b)

-10

c)

$\sqrt{10}$

d)

$-\sqrt{10}$

2.

x² = 121
What does x equal?

a)

11²

b)

11 and -11

c)

11

d)

- 1 1

3.

$\left(\sqrt{6}\right)^2=?$

a)

6

b)

-6

c)

36

d)

-36

4.

$\left(-\sqrt{23}\right)^2$

a)

23

b)

-23

c)

529

d)

±23

5.

$\sqrt{\left(-8\right)^2}=?$

a)

8

b)

-8

c)

±8

d)

64

6.

$\left(\sqrt{20}\right)^2$

a)

400

b)

20

c)

40

d)

± 20

7.

$-\left(\sqrt{13}\right)^2=?$ 半角で入力してください。

(a)

8.

$\sqrt{36}$ =

a)

$6$

b)

$\pm\ 6$

c)

$-6$

d)

$18$

9.

$\sqrt{121}$

a)

11

b)

-11

c)

$\pm11$

10.

$\sqrt{\left(-179\right)^2}=?$

a)

-179

b)

179

c)

32041

d)

±179

11.

$\sqrt{8}$

a)

$2\sqrt{4}$

b)

$2\sqrt{2}$

c)

$3\sqrt{2}$

d)

$4\sqrt{2}$

12.

$\sqrt{18}$

a)

$2\sqrt{2}$

b)

$3\sqrt{2}$

c)

$2\sqrt{3}$

d)

$3\sqrt{3}$

13.

$\sqrt{32}$

a)

$3\sqrt{2}$

b)

$4\sqrt{2}$

c)

$2\sqrt{8}$

d)

$6\sqrt{2}$

14.

$\sqrt{24}$

a)

$2\sqrt{6}$

b)

$3\sqrt{8}$

c)

$2\sqrt{12}$

d)

$4\sqrt{6}$

15.

$\sqrt{75}$

a)

$3\sqrt{5}$

b)

$5\sqrt{3}$

c)

$3\sqrt{15}$

d)

$5\sqrt{9}$

16.

$\sqrt{80}$

a)

$4\sqrt{5}$

b)

$2\sqrt{20}$

c)

$2\sqrt{40}$

d)

$\sqrt{5\sqrt{4}}$

17.

$\sqrt{216}$

a)

$3\sqrt{24}$

b)

$6\sqrt{6}$

c)

$3\sqrt{6}$

d)

$6\sqrt{2}$

18.

$\sqrt{2^2\times3^3}$

a)

$2\sqrt{3}$

b)

$6\sqrt{3}$

c)

$3\sqrt{6}$

d)

$6\sqrt{2}$

19.

$\sqrt{2^3\times3^2\times5}$

a)

$6\sqrt{5}$

b)

$6\sqrt{10}$

c)

$10\sqrt{6}$

d)

$5\sqrt{10}$

20.

$\sqrt{96}$

a)

$4\sqrt{6}$

b)

$2\sqrt{24}$

c)

$6\sqrt{6}$

d)

$3\sqrt{8}$

21.

$\sqrt{2.56}$

a)

0.16

b)

$\pm1.6$

c)

-1.6

d)

1.6

22.

$-\sqrt{100}$

a)

50

b)

-50

c)

10

d)

-10

23.

The area of a square is 36 cm². What is the length of one side?

a)

6 cm

b)

24 cm

c)

9 cm

d)

9 cm

24.

The area of a square is 100 cm². What is the perimeter(周の長さ)?

a)

25 cm

b)

10 cm

c)

40 cm

d)

50 cm

25.

$3\sqrt{2}+4\sqrt{2}=$

a)

$7\sqrt{2}$

b)

$7\sqrt{4}$

c)

$12\sqrt{2}$

d)

$12\sqrt{4}$

26.

$5\sqrt{3}+7\sqrt{3}=$

a)

$12\sqrt{3}$

b)

$12\sqrt{6}$

c)

$35\sqrt{3}$

d)

$35\sqrt{6}$

27.

$6\sqrt{5}-9\sqrt{5}=$

a)

$-3\sqrt{5}$

b)

$-3\sqrt{0}$

c)

$-54\sqrt{5}$

d)

$-54\sqrt{0}$

28.

次の計算をしなさい．

$\sqrt{24}\div\sqrt{2}$

a)

$2\sqrt{3}$

b)

$3\sqrt{2}$

c)

$2\sqrt{6}$

d)

$6\sqrt{2}$

29.

The √20 is between which two consecutive integers?

a)

2 & 3

b)

3 & 4

c)

4 & 5

d)

5 & 6

30.

Between which two consecutive whole numbers is the√200?

a)

13 and 14

b)

15 and 16

c)

14 and 15

d)

11 and 12

31.

$\sqrt{3}\left(\sqrt{2}+\sqrt{3}\right)=$

a)

$\sqrt{6}+3$

b)

$\sqrt{5}+\sqrt{6}$

c)

$15$

d)

$11$

32.

$\left(\sqrt{3}+\sqrt{2}\right)\left(\sqrt{3}-\sqrt{2}\right)=$

a)

$1$

b)

$2$

c)

$0$

d)

$3$

33.

$\sqrt{8}+3\sqrt{8}-2\sqrt{8}=$

a)

$\sqrt{8}$

b)

$2\sqrt{8}$

c)

$2\sqrt{2}$

d)

$4\sqrt{2}$

34.

$\left(\sqrt{6}-\sqrt{4}\right)\times\sqrt{2}=$

a)

$\sqrt{6}-2\sqrt{2}$

b)

$\sqrt{12}-\sqrt{8}$

c)

$2\sqrt{3}-2$

d)

$2\sqrt{3}-2\sqrt{2}$

35.

$\frac{\sqrt{12}}{\sqrt{6}}$ を $\sqrt{a}$ の形に表すと?

a)

$\sqrt{3}$

b)

$\sqrt{4}$

c)

$\sqrt{72}$

d)

$\sqrt{2}$

36.

$\sqrt{3}\sqrt{\frac{10}{3}}$ を $\sqrt{a}$ の形に表すと?

a)

$\sqrt{3}$

b)

$\sqrt{15}$

c)

$\sqrt{2}$

d)

$\sqrt{10}$

37.

次の計算をしなさい．

$5\sqrt{2}\ \times2\sqrt{3}$

a)

$10\sqrt{6}$

b)

$7\sqrt{6}$

c)

$6\sqrt{10}$

d)

$10\sqrt{5}$

平方根(square root)

Total questions: 37

Worksheet time: 22mins

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