Free Playing with Numbers 01 Practice Test - 4th Grade
Question 1
(18×50)+(18×9)=18×?
18
95
59
9
SOLUTION
Solution : C
Applying Distributive property of multiplication over addition to simplify:
(18×50)+(18×9)
=18×(50+9)=18×59
Question 2
Which is greater: 50 tens 5 ones OR 4 hundreds, 9 tens and 9 ones?
50 tens 5 ones
4 hundreds 9 Tens 9 ones
Both are equal
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.
Question 3
State True or False:
When the last 2 digits of a number are divisible by 4, the number is also divisible by 4.
True
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.
Question 4
State True or False:
7245 is divisible by 6.
True
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.
Question 5
28 =_____ x 4
5
6
7
8
SOLUTION
Solution : C
28 = 7 x 4
Question 6
What will be the divisor when 38 is divided by 9?
38
9
4
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.
Question 7
Which side of the number line should we move while subtracting?
Right
Left
Down
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: 9−3=6
Question 8
Find the value.
3221−789=?
2255
2522
2331
2432
SOLUTION
Solution : D
11 11 2/1/1 11 /3/2/2 /1 − 7 8 9 ––––––––––––– 2 4 3 2
Question 9
Find the value.
56+35=?
91
81
811
5635
SOLUTION
Solution : A
1 5 6+ 3 5 ––––––– 9 1The value is 91.
Question 10
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?
22
23
24
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.