Using shortcut method to determine 128000 - 625-

Step I Let's split 625 into (600 +20 +5) to use distributive property over addition.128000 × 625 = 128000 × (600 +20 +5) = 128000 × 600 +128000 × 20 +128000 × ...

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Standard IV

Mathematics

Multiplication with Three-Digit Numbers (with Carrying)

Using shortcu...

Question

Using shortcut method to determine $128000 \times 625$ .

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Solution

Step I - Let's split $625$ into $(600 + 20 + 5)$ to use distributive property over addition.
$128000 \times 625$ = $128000 \times (600 + 20 + 5)$ = $128000 \times 600 + 128000 \times 20 + 128000 \times 5$
= $76800000 + 2560000 + 640000$
= $80, 000, 000$
Hence, $128000 \times 625$ = $80, 000, 000$ .

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Using shortcut method to determine 128000×625.

Step I - Let's split 625 into (600+20+5) to use distributive property over addition.128000×625 = 128000×(600+20+5) = 128000×600+128000×20+128000×5 = 76800000+2560000+640000 = 80,000,000Hence, 128000×625 = 80,000,000.

Using shortcut method to determine $128000 \times 625$ .

Step I - Let's split $625$ into $(600 + 20 + 5)$ to use distributive property over addition.
$128000 \times 625$ = $128000 \times (600 + 20 + 5)$ = $128000 \times 600 + 128000 \times 20 + 128000 \times 5$
= $76800000 + 2560000 + 640000$
= $80, 000, 000$
Hence, $128000 \times 625$ = $80, 000, 000$ .