Question

find the estimated product in each case.also find the actual product 1-74×44 2-93×56 3-86×62 4-115×34 5-128×47 6-271×25answer​

Answer 1

Answer:

(i) 49\times5249×52

= 49 to the nearest ten = 50 and, 52 to the nearest ten = 50

∴ Required product = 50\times50=250050×50=2500

(ii) 63\times3863×38

63 to the nearest ten = 60 and, 38 to the nearest ten = 40

∴ Required product = 60\times40=240060×40=2400

(iii) 27\times5427×54

= 27 to the nearest ten = 30 and, 54 to the nearest ten = 50

∴ Required product = 30\times50=150030×50=1500

(iv) 53\times8553×85

= 53 to the nearest ten = 50 and, 85 to the nearest ten = 90

∴ Required product =

50\times90=450050×90=4500

(v) 74\times6774×67

= 74 to the nearest ten = 70 and, 67 to the nearest ten = 70

∴ Required product = 70\times70=490070×70=4900

(vi) 25\times3325×33

= 25 to the nearest ten = 30 and , 33 to the nearest ten = 30

∴ Required product =

30\times30=90030×30=900