Tag: maths

Quizzes (518) Questions (9324)

Questions Related to maths

Multiple choice maths ways to multiply and divide mental multiplication multiplication methods multiplication of numbers

On dividing 4996 by a certain number the quotient is 62 and the the remainder is 36 what is the divisor ? 

  1. 80

  2. 85

  3. 90

  4. 95
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Let the divisor number is x

Then$ quotient \times divisor +reminder =number$
$\therefore 62x+36=4996$
$\Rightarrow 62x=4996-36$
$\Rightarrow 62x=4960$
$\Rightarrow x=80$
Then divisor is 80

Multiple choice maths ways to multiply and divide mental multiplication multiplication methods multiplication of numbers

A boy was asked to multiply a certain number by 25 He multiplied it by 52 and got his answer more by 324 than the correct answer The number to be multiplied was

  1. 15

  2. 12

  3. 18

  4. 23
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let the number is x

The if be multiply by 25 then correct answer =25x 
But boy multiply with 52 then boys answer =52 x
As per question boy answer if more then 324 than correct answer 
$\therefore 52x=25x+324$
$\Rightarrow 52x-25x=324$
$\Rightarrow 27x=324$
$\Rightarrow x=12$

Multiple choice maths ways to multiply and divide mental multiplication multiplication methods multiplication of numbers

Suman quickly estimated the product of $796\times 19$ in the following manner. He rounded each number to the nearest ten.
He multiplied these new numbers together.
What was Suman's estimate?

  1. $14,000$
  2. $15,010$
  3. $15,200$
  4. $16,000$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$796\xrightarrow {\text {rounded to nearest tens}}800$
$19\xrightarrow {\text {rounded to nearest tens}}20$
$\therefore 800\times 20=16,000$