Activity 1
1. Draw the circles and mark the fractional parts
(i) $\frac{3}{8}$
(ii) $\frac{2}{5}$
(iii) $\frac{4}{9}$

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Solution

(i). Total Number of parts $= 8$
Degree of one part $= \frac{360}{8} = \frac{180}{4} = \frac{90}{2} = 45^{\circ}$
Number of parts to be coloured $= 3$
Total angle to be coloured $= 45^{\circ} \times 3 = 135^{\circ}$
(ii). Total Number of parts $= 5$ Degree of one part $= \frac{360}{5} = 72^{\circ}$
Number of parts to be coloured $= 2$
Total angle to be coloured $= 72^{\circ} \times 2 = 144^{\circ}$
(iii). Total Number of parts $= 9$ Degree of one part $= \frac{360}{9} = 40^{\circ}$
Number of parts to be coloured $= 4$
Total angle to be coloured $= 40^{\circ} \times 4 = 160^{\circ}$

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Similar questions

Simplify $:$ $8$ $-$ $($ $\frac{3}{4}$ $+$ $\frac{2}{10}$ $)$ $\div$ $($ $2 \frac{2}{4}$ $-$ $\frac{3}{5}$ $)$

Compare the given fraction and replace $' □'$ by an appropriate sign $' < or >'$

$\frac{3}{5} □ \frac{4}{5}$

Find the reciprocal of each of the following fractions. Classify the reciprocals as proper fractions, improper fractions and whole numbers.

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

Fill in the blanks:

$(i) - 4 \times \frac{7}{9} = \frac{7}{9} \times$ ___

$(i i) \frac{5}{11} \times \frac{- 3}{8} = \frac{- 3}{8} \times$ ___

$(i i i) \frac{1}{2} \times (\frac{3}{4} + \frac{- 5}{12}) = \frac{1}{2} \times$ ____ $+ (\times) \frac{- 5}{12}$

$(i v) \frac{- 4}{5} \times \frac{5}{7} \times$ ___ $= (\frac{- 4}{5} \times \frac{5}{7}) \times \frac{- 8}{9}$

Find the values of the following:
(i) |11 $-$ 25|

(ii) |9| + | $-$ 9|

(iii) |6×3 + ( $-$ 6)×3|

(iv) |x+5 $-$ (7+x)|

(v) |4| × | $-$ 8|

(vi) | 3(3 $-$ 8) + ( $-$ 5)|

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Activity 1 1. Draw the circles and mark the fractional parts (i) 38 (ii) 25 (iii) 49

Activity 1
1. Draw the circles and mark the fractional parts
(i) $\frac{3}{8}$
(ii) $\frac{2}{5}$
(iii) $\frac{4}{9}$