Question

1991×1001 by distributive property
$1991x1005$
distributive property.
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Answer 1

Answer:

1991 × 1001

1991 × 1005 = 1991 × (1000 + 5)

= 1991 × 1000 + 1991 × 5

= 1991000 + 9955

= 2000995.

1991 × 1005

= (2000 – 9) × (1000 + 5)

= 2,000,000 + 10,000 - 9,000 - 45

= 2,010,000 - 9045

= 2,000,955.

THIS IS YOUR ANSWER.

Answer 2

Answer:

Step 1 - Write the expression,

$\sf{=1991\times 1005}$

Step 2 - Re-write 1005 as 1000+5

$\sf{=1991\times(1000+5)}$

Step 3 - Apply distributive property, a(b+c)=ab+aca(b+c)=ab+ac

$\sf{=1991\times 1000+1991\times 5}$

$\sf{=1991000+9955}$

$\sf{=2000955}$

$\sf{Therefore, 1991\times 1005=2000955}$