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Questions Related to multiplication methods

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

Which of the following options is correct?
Statement 1: If $7$ friends divide $76895$ coloured beads amongst themselves, then each will get $10984$ coloured beads
Statement 2: If $16$ families went on a trip and pay Rs. $216352$ in total, then each family will pay Rs. $13522$.

  1. Both statement 1 and statement 2 are true

  2. Statement 1 is true but statement-2 is false

  3. Statement-1 is false but statement-2 is true

  4. Both statement-1 and statement-2 are false

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement 1-If $7$ friends divide $76895$ beads, each friend will get $(76859\div 7)$ beads i.e., $10985$ beads
So, statement 1 is false
Statement 2: Each family will pay
Rs. $(216352\div 16)=Rs.13552$

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

A generator consumes 2.875 litres of diesel per hour.The quantity of diesel required to run the generator for 24 hours is ______ .

  1. $45$ litres
  2. $55$ litres
  3. $72$ litres
  4. $69$ litres
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$\Rightarrow$  Diesel consumes by generator in $1\,hour$ = $2.875\,liters.$

$\Rightarrow$  Diesel consumes by generator in $24\,hours=24\times 2.875\,liters$
$\therefore$  Diesel consumes by generator in $24\,hours=69\,liters$.

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

A machine produces $2800$ screws in a day. Which of the following is the best estimate of the number of screws produced in 2 days?

  1. $3500$
  2. $5000$
  3. $3000$
  4. $2900$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A machine produces $2800$ screws in a day.

Hence it will produce $2800\times2$ screws in $2$ days
$=5600$ screws in $2$ days
The best estimate of the number of screws produced in $2$ days is $5000$
Hence Option B