Fill in the blanks:
(i) 80 ÷ (......) = −5
(ii) (−84) + (......) = −7
(iii) (......) ÷ (−5) = 25
(iv) (......) ÷ 372 = 0
(v) (......) ÷ 1 = −186
(vi) (......) ÷ 17 = −2
(vii) (......) ÷ 165 = −1
(viii) (......) ÷ (−1) = 73
(ix) 1 ÷ (......) = −1

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Solution

(i) 80 ÷ (–16) = –5
(ii) (–84) ÷ (12) = –7
(iii) (–125) ÷ (–5) = 25
(iv) (0) ÷ (372) = 0
(v) (–186) ÷ 1 = –186
(vi) (–34) ÷ 17 = –2
(vii) (–165) ÷ 165 = –1
(viii) (–73) ÷ –1 = 73
(ix) 1 ÷ (–1) = –1

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Similar questions

Q. Fill in the blanks:
(i) 296 ÷ ... = −148
(ii) −88 ÷ ... = 11
(iii) 84 ÷ ... = 12
(iv) ....... ÷ −5 = 25
(v) ....... ÷ 156 = −2
(vi) ....... ÷ 567 = −1

Q. Fill in the blanks

(i) 72 ÷ (......) = −4
(ii) −36 ÷ (......) = −4
(iii) (......) ÷ (−4) = 24
(iv) (......) ÷ 25 = 0
(v) (......) ÷ (−1) = 36
(vi) (......) ÷ 1 = −37
(vii) 39 ÷ (......) = −1
(viii) 1 ÷ (......) = −1
(ix) −1 ÷ (......) = −1

Fill in the blanks:

i. 1 bar = ……………….. N/m².

ii. 1 atmosphere = ………….. Pa.

Prove that:
(i) $c o s 55^{\circ} + c o s 65^{\circ} + c o s 175^{\circ} = 0$
(ii) $s i n 50^{\circ} - s i n 70^{\circ} + s i n 10^{\circ} = 0$
(iii) $c o s 80^{\circ} + c o s 40^{\circ} - c o s 20^{\circ} = 0$
(iv) $c o s 20^{\circ} + c o s 100^{\circ} + c o s 140^{\circ} = 0$
(v) $s i n \frac{5 π}{18} - c o s \frac{4 π}{9} = \sqrt{3} s i n \frac{π}{9}$
(vi) $c o s \frac{π}{12} - s i n \frac{π}{12} = \frac{1}{\sqrt{2}}$
(vii) $s i n 80^{\circ} - c o s 70^{\circ} = c o s 50^{\circ}$
(viii) $s i n 51^{\circ} - c o s 81^{\circ} = c o s 21^{\circ}$

Name the property under multiplication used in each of the following:

(i) $\frac{- 4}{5} \times 1 = 1 \times \frac{- 4}{5} = \frac{- 4}{5}$

(ii) $\frac{- 13}{17} \times \frac{- 2}{7} = \frac{- 2}{7} \times \frac{- 13}{7}$

(iii) $\frac{- 19}{29} \times \frac{29}{- 19} = 1$

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Fill in the blanks: (i) 80 ÷ (......) = −5 (ii) (−84) + (......) = −7 (iii) (......) ÷ (−5) = 25 (iv) (......) ÷ 372 = 0 (v) (......) ÷ 1 = −186 (vi) (......) ÷ 17 = −2 (vii) (......) ÷ 165 = −1 (viii) (......) ÷ (−1) = 73 (ix) 1 ÷ (......) = −1

(i) 80 ÷ (–16) = –5 (ii) (–84) ÷ (12) = –7 (iii) (–125) ÷ (–5) = 25 (iv) (0) ÷ (372) = 0 (v) (–186) ÷ 1 = –186 (vi) (–34) ÷ 17 = –2 (vii) (–165) ÷ 165 = –1 (viii) (–73) ÷ –1 = 73 (ix) 1 ÷ (–1) = –1

Fill in the blanks:
(i) 80 ÷ (......) = −5
(ii) (−84) + (......) = −7
(iii) (......) ÷ (−5) = 25
(iv) (......) ÷ 372 = 0
(v) (......) ÷ 1 = −186
(vi) (......) ÷ 17 = −2
(vii) (......) ÷ 165 = −1
(viii) (......) ÷ (−1) = 73
(ix) 1 ÷ (......) = −1

(i) 80 ÷ (–16) = –5
(ii) (–84) ÷ (12) = –7
(iii) (–125) ÷ (–5) = 25
(iv) (0) ÷ (372) = 0
(v) (–186) ÷ 1 = –186
(vi) (–34) ÷ 17 = –2
(vii) (–165) ÷ 165 = –1
(viii) (–73) ÷ –1 = 73
(ix) 1 ÷ (–1) = –1