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Standard VII

Mathematics

Additive Identity

Which of the ...

Question

Which of the following describes the additive identity ?

0 + 3 = 3

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4 \times 3

= 12

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1 + 2 = 2 + 1

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(-2) + 1 = (-1)

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Solution

The correct option is A
0 + 3 = 3
Additive identity states that adding zero to any number does not change the original number.

$∴$ 0 + 3 = 3 describes the additive identity.

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Similar questions

Q. Evaluate :

\frac{\frac{1}{2} + 3 \frac{1}{4} + 1 \frac{1}{6}}{2 \frac{1}{2} + 1 \frac{1}{6} + 6 \frac{1}{3}} + \frac{1}{120}

Question 22

Which of the following is an example of distributive property of multiplication over addition for rational numbers.
(a) $- \frac{1}{4} \times {\frac{2}{3} + (\frac{- 4}{7})} = [- \frac{1}{4} \times \frac{2}{3}] + [- \frac{1}{4} \times (\frac{- 4}{7})]$
(b) $- \frac{1}{4} \times {\frac{2}{3} + (\frac{- 4}{7})} = [\frac{1}{4} \times \frac{2}{3}] - (\frac{- 4}{7})$
(c) $- \frac{1}{4} \times {\frac{2}{3} + (\frac{- 4}{7})} = \frac{2}{3} + (- \frac{1}{4}) \times \frac{- 4}{7}$
(d) $- \frac{1}{4} \times {\frac{2}{3} + (\frac{- 4}{7})} = {\frac{2}{3} + (\frac{- 4}{7})} - \frac{1}{4}$

Q. Observe the following patterns

1 = \frac{1}{2} (1 \times (1 + 1))

1 + 2 = \frac{1}{2} (2 \times (2 + 1))

1 + 2 + 3 = \frac{1}{2} (3 \times (3 + 1))

1 + 2 + 3 + 4 = \frac{1}{2} (4 \times (4 + 1))

and find the value of each of the following

31 + 32 + . . . + 50

Find the value of:

(1)

(2)

(3)

(4)

(5)

The value of

$\frac{3}{4} \div 2 \frac{1}{4}$ of $\frac{2}{3} - \frac{(\frac{1}{2}) - (\frac{1}{3})}{(\frac{1}{2}) + (\frac{1}{3})} \times 3 \frac{1}{3} + \frac{5}{6}$ is

A. $\frac{29}{12}$

\frac{49}{54}

\frac{2}{3}

\frac{1}{6}

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Which of the following describes the additive identity ?

The correct option is A 0 + 3 = 3Additive identity states that adding zero to any number does not change the original number. ∴ 0 + 3 = 3 describes the additive identity.

The correct option is A
0 + 3 = 3
Additive identity states that adding zero to any number does not change the original number.

$∴$ 0 + 3 = 3 describes the additive identity.