Question

$901\times15, 89\times15, 10\times15$ if these numbers are multiplied and added then the result is equal to ______x15.

• A. 1000
• B. 100
• C. 500
• D. 1500

Answer 1

Answer:

A. 1000

If these numbers are multiplied and added, the result is equal to 1000 x 15.

You can solve this quickly using the distributive property of multiplication, which allows you to take out the common multiplier 15:

$(901\times 15)+(89\times 15)+(10\times 15)=(\text{\_\_\_\_\_\_})\times 15$

1. Group the numbers inside the parentheses:

$(901+89+10)\times 15$

2. Add the numbers together:

• 901 + 89 = 990

• $990 + 10 = 1000$

3. Final Equation:

$\mathbf{1000}\times 15$