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Standard VII

Mathematics

Determination of Significant Digits in a Number

Read out each...

Question

Read out each of the following numbers carefully and specify the natural numbers in it:
$87, 54, 0, - 13, - 4.7, \sqrt{7}, 217, \sqrt{15}, - 87, 3 \sqrt{7}, 4.807, 0.002, \sqrt{16}$ and $2 + \sqrt{3} .$

0, 87, 54, \sqrt{16}

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87, 54,

\sqrt{16}

217

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0, - 13, - 4, 7, 217, 54, 87

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\sqrt{7}

\sqrt{15}

3 \sqrt{7}

\sqrt{16}

2 + \sqrt{3}

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Solution

The correct option is A $87, 54,$ $\sqrt{16}$ , $217$
Natural numbers from the given list are $87, 54, \sqrt{16} = 4$ and $217$ .
Therefore, option $B$ is correct.

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Similar questions

Q. Read each of the following numbers carefully-

87, 54, 0, - 13, - 4.7, \sqrt{7}, 217, \sqrt{15}, - 87, 3 \sqrt{7}, 4.807, 0.002, \sqrt{16}

and

2 + \sqrt{3} .

From the given numbers, write which are real numbers.

Q. Read each of the following numbers carefully-

87, 54, 0, - 13, - 4.7, \sqrt{7}, 217, \sqrt{15}, - 87, 3 \sqrt{7}, 4.807, 0.002, \sqrt{16}

and

2 + \sqrt{3} .

From the given numbers, which are rational numbers?

Say true or false:

87, 54, 0, - 13, - 4.7, \sqrt{5}, 217, \sqrt{15}, - 87, 3 \sqrt{2}, 4.807, 0.002, \sqrt{16}

and

2 + \sqrt{3}

are rational numbers.

Verify the following :

(i) $\frac{3}{7} \times (\frac{5}{6} + \frac{12}{13}) = (\frac{3}{7} \times \frac{5}{6}) + (\frac{3}{7} \times \frac{12}{13})$
(ii) $\frac{- 15}{4} \times (\frac{3}{7} + \frac{- 12}{5}) = (\frac{- 15}{4} \times \frac{3}{7}) + (\frac{- 15}{4} \times \frac{- 12}{5})$
(iii) $(\frac{- 8}{3} + \frac{- 13}{12}) \times \frac{5}{6} = (\frac{- 8}{3} \times \frac{5}{6}) + (\frac{- 13}{12} \times \frac{5}{6})$
(iv) $\frac{- 16}{7} \times (\frac{- 8}{9} + \frac{- 7}{6}) = (\frac{- 16}{7} \times \frac{- 8}{9}) + (\frac{- 16}{7} \times \frac{- 7}{6})$

Fill in the blanks.

(i) $(\frac{- 3}{17}) + (\frac{- 12}{5}) = (\frac{- 12}{5}) + (. . . . .)$

(ii) $- 9 + \frac{- 21}{8} = (. . . . . .) + (- 9)$

(iii) $(\frac{- 8}{13} + \frac{3}{7}) + (\frac{- 13}{4}) = (. . . . . .) + [\frac{3}{7} + (\frac{- 13}{4})]$

(iv) $- 12 + (\frac{7}{12} + \frac{- 9}{11}) = (- 12 + \frac{7}{12}) + (. . . . .)$

(v) $\frac{19}{- 5} + (\frac{- 3}{11} + \frac{- 7}{8}) = {\frac{19}{- 5} + (. . . . .)} + \frac{- 7}{8}$

(vi) $\frac{- 16}{7} + . . . . . = . . . . . . + \frac{- 16}{7} = \frac{- 16}{7}$

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Read out each of the following numbers carefully and specify the natural numbers in it:87,54,0,−13,−4.7,√7,217,√15,−87,3√7,4.807,0.002,√16 and 2+√3.

The correct option is A 87,54, √16, 217Natural numbers from the given list are 87,54,√16=4 and 217.Therefore, option B is correct.

Read out each of the following numbers carefully and specify the natural numbers in it:
$87, 54, 0, - 13, - 4.7, \sqrt{7}, 217, \sqrt{15}, - 87, 3 \sqrt{7}, 4.807, 0.002, \sqrt{16}$ and $2 + \sqrt{3} .$

The correct option is A $87, 54,$ $\sqrt{16}$ , $217$
Natural numbers from the given list are $87, 54, \sqrt{16} = 4$ and $217$ .
Therefore, option $B$ is correct.