# Free Playing with Numbers 01 Practice Test - 4th Grade

(18×50)+(18×9)=18×?

A.

18

B.

95

C.

59

D.

9

#### SOLUTION

Solution : C

Applying Distributive property of multiplication over addition to simplify:

(18×50)+(18×9)

=18×(50+9)=18×59

Which is greater: 50 tens 5 ones OR 4 hundreds, 9 tens and 9 ones?

A.

50 tens 5 ones

B.

4 hundreds 9 Tens 9 ones

C.

Both are equal

D.

5 tens 50 ones

#### SOLUTION

Solution : A

50 Tens 5 Ones = 50×10+5×1=500+5=505

4 Hundreds, 9 Tens 9 Ones = 4×100+9×10+9×1=400+90+9=499

505>499

Hence, 50 Tens 5 Ones is greater.

State True or False:
When the last 2 digits of a number are divisible by 4, the number is also divisible by 4.

A.

True

B.

False

#### SOLUTION

Solution : A

The divisibility rule for a number to be divisible by 4 is that the last 2 digits of the number should be divisible by 4.

For e.g:  In 1328 the last 2 digits = 28, which is exactly divisible by 4.

1328÷4=332, with a remainder of 0.

Hence 1328 is exactly divisible by 4.

State True or False:
7245 is divisible by 6.

A.

True

B.

False

#### SOLUTION

Solution : B

A number is divisible by 6 if it is divisible by both 2 and 3.

In 7245: sum of the digits is = 7 + 2 + 4 + 5 = 18, which is divisible by 3.

If a number is even, it is divisible by 2.

Here 7245 is an odd number, hence it is not divisible by 2.

7245 is not divisible by 6.

28 =_____ x 4

A.

5

B.

6

C.

7

D.

8

#### SOLUTION

Solution : C

28 = 7 x 4

What will be the divisor when 38 is divided by 9?

A.

38

B.

9

C.

4

D.

2

#### SOLUTION

Solution : B

Divisor is a number by which another number is divided.

Here, 38 is divided by 9. Hence, 9 is the divisor.

Which side of the number line should we move while subtracting?

A.

Right

B.

Left

C.

Down

D.

Up

#### SOLUTION

Solution : B

Subtraction means to take away or remove. We count backwards while subtracting. Hence, on the number line, we move left.

For e.g: 93=6 Find the value.

3221789=?

A.

2255

B.

2522

C.

2331

D.

2432

#### SOLUTION

Solution : D

11 11     2/1/1  11  /3/2/2 /1      7   8  9 –––––––––––    2  4   3  2

Find the value.

56+35=?

A.

91

B.

81

C.

811

D.

5635

#### SOLUTION

Solution : A

1     5 6+  3 5 –––––     9 1

The value is 91.

There are 88 students going on a trip in 4 school buses. Each bus has equal number of students. How many students are there in each bus?

A.

22

B.

23

C.

24

D.

25

#### SOLUTION

Solution : A

Given:

Number of students going on a trip = 88

Number of school buses = 4

If there are an equal number of students in each bus, then

The number of students in each bus = 88÷4=22 There are 22 students in each bus.