Tag: maths

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Questions Related to maths

Multiple choice maths operations adding and subtracting numbers using place value addition & subtraction mental additions and subtractions

$\left (1 - \dfrac {1}{2}\right ) + \left (\dfrac {3}{4} - \dfrac {1}{4}\right )=$

  1. $0$
  2. $1$
  3. $\dfrac {1}{2}$
  4. $\dfrac {3}{4}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
$\left ( 1-\dfrac{1}{2} \right )+\left ( \dfrac{3}{4}-\dfrac{1}{4} \right )$
$=\left ( \dfrac{2-1}{2} \right )+\left ( \dfrac{3-1}{4} \right )$
$=\dfrac{1}{2}+\dfrac{2}{4}= \dfrac{1}{2}+\dfrac{1}{2}= 1$
Multiple choice maths operations adding and subtracting numbers using place value addition & subtraction mental additions and subtractions

Grace has 16 jellybeans in her pocket. She has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of jellybeans she must take out of her pocket to ensure that she has one of each color?

  1. 4

  2. 8

  3. 12

  4. 13

  5. 16
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Grace has $8$ red , $4$ green , $4$ blue jellybeans
  • In order to have one of each color , she should take out $7$ red, $3$ green , $3$ blue jellybeans
  • So she has to take out $7+3+3=13$ jellybeans
Multiple choice maths operations adding and subtracting numbers using place value addition & subtraction mental additions and subtractions

A girl goes $30$ meters North, then turns right and walks $40$ meters, then turns right and walks $20$ meters, then again turns right and walks $40$ meters. How many meters is she from the original position?

  1. $0$ meter
  2. $40$ meter
  3. $20$ meter
  4. $10$ meter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
First goes $30$ m north
Then turn right and go $40$ m
Then turn right and go $20$ m
Then turn right and go $40$ m
Finally, distance from starting point $= 30 - 20 = 10$ m