Exercise 7.5

Write these fractions appropriately as additions or subtractions.

(a)

The given figure represents the additionsubtraction of 15 and 25 i.e. 15 + 25 = 1+25 = 35

(b)

The given figure represents the subtractionaddition between 1 and 35 i.e. 1 - 35 = 11 - 35 = 1×5−3×15 = 5−35 = 25

(c)

The given represents additionsubtraction of 26 and 36 i.e. 26 + 36 = 2+36 = 56

Solve

(a) 118 + 118 = 218315 = 2÷218÷218÷32÷3 =

(b) 815 + 315 = 8+3158+815 =

(c) 77 - 57 = 7−575+77 =

(d) 122 + 2122 = 1+21221−2122 = =

(e) 1215 - 715 = 12−71512+715 = = 5÷515÷518÷515÷5 =

(f)58 + 38 = 5+385−28 = =

(g) 1-23 = 33 - 2333 - 22 = 3−233−32 =

(h) 14 + 04 = 1+044+04 =

(i) 3 - 125 = 31 - 125 = 3×5−12×1512×5−12×35 = 15−12512−155 =

Shubham painted 23 of the wall space in his room. His sister Madhavi helped and painted 13 of the wall space. How much did they paint together?

Fraction of wall painted by Shubham = 2332

Fraction of wall painted by Madhavi = 1323

Fraction of wall painted by Shubham and Madhavi

= 23 + 13 = 2+133+12 = 3332 =

Shubham and Madhavi painted the entire wall together.

Fill in the missing fractions.

(a) 710 - 2552 = 310

(b) 821218 - 321 = 521

(c) - 36 = 36

(d) 727287 + 527 = 1227

Javed was given 57 of a basket of oranges. What fraction of oranges was left in the basket?

Instruction