Question

find the product by suitable rearrangement
1) 25×1478×4
2) 30×50×6×20
​

Answer 1

Answer:

1] 25 × 1478 × 4

= ( 25 × 4 ) × 1478

= 100 × 1478

= 147800

2] 30 × 50 × 6 × 20

= 30 × 6 × ( 50 × 20 )

= 180 × 1000

= 180000

Answer 2

Answer :

• 25 × 1478 × 4 = 147800
• 30 × 50 × 6 × 20 = 180000

Given :

• 25 × 1478 × 4
• 30 × 50 × 6 × 20

To find :

• Product by suitable rearrangement

Solution :

(1) 25 × 1478 × 4

》25 × 1478 × 4

》4 × 25 × 1478

》147800

Hence , 25 × 1478 × 4 = 147800

(2) 30 × 50 × 6 × 20

》30 × 50 × 6 × 20

》(50 × 20) (30 × 6)

》1000 × 180

》180000

Hence , 30 × 50 × 6 × 20 = 180000