Exercise 1.5

1. Find

(i) 6412 : 8×812 = 82×12 = .

(ii) 3215 : 25152415 = 21212 = .

(iii) 12513 : 53×13 = 51512 = .

2. Find :

(i) 932 : 3×332 = 32×32 = 33312 = .

(ii) 3235 : = 25×25 = 2221 = .

(iii) 1634 : = 24×34 = 2322 = .

(iv) 125−13 : 15×5×513 = 153×13 = 151152 = 15125.

3. Simplify :

(i) 223×235 : 223+35223×35 = 219152615

(ii)1337: 133×7 = 3−21321

(iii) 11121114 : 1112−141112+14 = 111411−14

(iv) 712 × 812 : 7×812 = 5650