Question

estimate the product and verify verified by actual calculation​

Answer 1

A. 38×7

ans. (40×10)=400

B.45×67

ans. (50×70)=3500

C. 225×8

ans. (230×10)=2300

D. 62×78

ans. (60×80)=4800

E. 26×725

ans. (30×730)=21900

F. 602×145

ans. (600×150)=90000