GRADE 4 MATH PRACTICE TEST

Question 1 :

The number which does not have no common factor other than the number itself and 1, is called ______________ number.

(A) Composite            (B) even        (C) prime

Solution :

The number which does not have no common factor other than the number itself and 1 is called prime number.

Question 2 :

Find the prime factors of 72

(A) 2⁵ x 3²           (B) 2³ x 3²           (C) 2⁴ x 3

Solution :

72  =  2 ⋅ 2 ⋅ 2 ⋅ 3 ⋅ 3

  =  2³ ⋅ 3²

Question 3 :

The factor common to two or more numbers is called a ___________ factor.

(A) prime     (B) common    (C) none of these

Solution :

The factor common to two or more numbers is called a common factor.

Question 4 :

The quantity of coffee in three vessels are 1200 ml, 1440 ml and 1320 ml. Find the capacity of the largest cup that can measure the coffee in the vessels and exact number of times.

(A) 150 ml           (B) 120 ml        (C) 100 ml

Solution :

=  5 ⋅ 2 ⋅ 2 ⋅ 2 ⋅ 3

=  120 ml

Question 5 :

H.C.F x _____________  =  product of two numbers

(A) L.C.M             (B) dividend            (C) divisor

Solution :

Product of two numbers  =  LCM x HCF

Options 6 :

Represent the decimal 0.84 in to lowest form of fraction.

(A) 12/25       (B) 21/25     (C) 13/25

Solution :

0.84  =  0.84 ⋅ (100/100)

  =  84/100

  =  21/25

The fraction form of 0.84 is 21/25.

Question 7 :

Subtract 546.925 - 52.68 

(A) 494.245        (B) 214.25       (C) 1245.3

Solution :

546.925 - 52.68  =  494.245

Question 8 :

To multiply a decimal fraction by 10, move the decimal point by one place to the _____________

(A) right        (B) left       (C) none of these

Solution :

For example 5.6 x 10  =  56

From this, we have to move the decimal one digit to the right.

Question 9 :

A speed of a train is 2.5 kilometer per hour. What distance would it travel in 3 hours?

(A) 21.5 km      (B) 7.5 km    (C) 27.5 km

Solution :

Speed of train per hour  =  2.5 km

Distance traveled in 3 hours  =  2.5 x 3

  =  7.5 kilometer

Question 10 :

A family requires 2.5 liters of milk per day. How much milk would the family require in a month of 31 days? 

(A) 125.5 liters        (B) 77.5 liters        (C) 65.1 liters

Solution :

Quantity of milk required  =  2.5 liters

Quantity of milk required in 31 days  =  31(2.5)

  =  77.5 liters

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