High Thinking MCQs – Number System
Junior Classes | Maths | EDU BRIGHT PAGES
Q1.
Which number lies exactly in the middle of 246 and 256?
250
251
252
249
Answer:
250
Middle = (246 + 256) ÷ 2 = 250
Q2.
Which number has the greatest place value of digit 7?
7,432
4,732
73,421
3,472
Answer:
73,421
7 is in ten-thousands place.
Q3.
Smallest 3-digit number + largest 2-digit number =
198
199
200
201
Answer:
199
100 + 99 = 199
Q4.
6 × ⬜ = 6 + 6 + 6 + 6
3
4
6
12
Answer:
4
6 added 4 times = 6 × 4
Q5.
Which number is even but NOT a multiple of 4?
16
18
20
24
Answer:
18
18 ÷ 4 is not a whole number.
Q6.
Which number has exactly one factor other than 1 and itself?
4
6
8
9
Answer:
4
Factors: 1, 2, 4
Q7.
Which statement is always true?
All odd numbers are prime
All even numbers are composite
Every prime number is odd except one
Every multiple of 3 is even
Answer:
Option C
2 is the only even prime.
Q8.
Difference between greatest and smallest 4-digit numbers:
8999
9000
9999
8000
Answer:
8999
9999 − 1000 = 8999
Q9.
Which number is divisible by both 2 and 5?
120
125
132
150
Answer:
150
Divisible by 2 & 5 → ends with 0
Q10.
Adding zero at the end of a number means:
Addition
Subtraction
Multiplication
Division
Answer:
Multiplication
Number becomes 10 times bigger.
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