Question

3. Estimate the following products using general rule:

(a) 578 × 161 (b) 5281 × 3491 (c) 1291 × 592 (d) 9250 × 29​

Answer 1

Answer:

a)  578 * 161

  ( 500+70+8) * (100+60+1)

  50000+30000+500+7000+4200+70+800+480+8

  = 93058

{ Do this in all }

(b) 5281 × 3491 = 18435971

(c) 1291 × 592 = 764272

(d) 9250 × 29​ = 268250