The correct option is D 36005 × 198 nbsp;× 4 = 5 × 4 × 198 [Using commutative property for 198 and 4] =20 × 198 nbsp; [∵ 5 × 4 = 20] nbsp; nbsp; nb ...

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Standard VII

Mathematics

Multiplication of Integers

5 × 198 × 4=

Question

$5 \times 198 \times 4 =$ ___________ .

4600

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4000

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3900

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3600

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Solution

The correct option is D 3600
$5 \times 198 \times 4 = 5 \times 4 \times 198$
[Using commutative property for 198 and 4]
$= 20 \times 198$
$[∵ 5 \times 4 = 20] = 20 \times (200 - 2) [∵ 198 = 200 - 2] = 20 \times 200 - 200 \times 2$
[Applying distributive property of multiplication over subtraction]
$= 4000 - 400 = 3600$

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Similar questions

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If z = 3+5i, then $z^{3}$ + $¯ z$ + 198 =

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Q. Question 198
Construct a square in which each diagonal is 5 cm long.

Q. If the function

g (x)

is defined by

g (x) = \frac{x^{200}}{200} + \frac{x^{199}}{199} + \frac{x^{198}}{198} + . . . . + \frac{x^{2}}{2} + x + 5

, then

g^{'} (0) =

_____

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5×198×4= ___________ .

The correct option is D 36005×198×4=5×4×198 [Using commutative property for 198 and 4] =20×198 [∵5×4=20]=20×(200−2)[∵198=200−2]=20×200−200×2 [Applying distributive property of multiplication over subtraction] =4000−400=3600

$5 \times 198 \times 4 =$ ___________ .