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Math Mastery for Pre-Teens

Mathematics

A collection of medium-difficulty, fact-based mathematics questions suitable for pre-teens, covering a range of foundational concepts.

math arithmetic geometry fractions decimals measurement
20 Questions Medium Ages 9+ Aug 15, 2026
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About this Study Set

This study set covers Mathematics through 20 practice questions. A collection of medium-difficulty, fact-based mathematics questions suitable for pre-teens, covering a range of foundational concepts. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 20 questions from the Math Mastery for Pre-Teens study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the value of the digit '7' in the number 47,321?
  • A 7 ones
  • B 7 tens
  • C 7 hundreds
  • D 7 thousands
2 Which of the following is a prime number?
  • A 4
  • B 6
  • C 9
  • D 11
3 If a rectangle has a length of 8 cm and a width of 5 cm, what is its area?
  • A 13 sq cm
  • B 26 sq cm
  • C 40 sq cm
  • D 64 sq cm
4 What is 3/4 as a decimal?
  • A 0.25
  • B 0.50
  • C 0.75
  • D 1.33
5 How many sides does a hexagon have?
  • A 5
  • B 6
  • C 7
  • D 8
6 What is the perimeter of a square with sides of 7 metres?
  • A 14 metres
  • B 21 metres
  • C 28 metres
  • D 49 metres
7 Which operation is the inverse of addition?
  • A Multiplication
  • B Division
  • C Subtraction
  • D Exponentiation
8 What is the value of 5 squared (5²)?
  • A 10
  • B 25
  • C 30
  • D 50
9 If you have 1.5 kilograms of flour, how many grams is that?
  • A 15 grams
  • B 150 grams
  • C 1500 grams
  • D 15000 grams
10 What is the average of the numbers 10, 20, and 30?
  • A 15
  • B 20
  • C 25
  • D 30
11 Which angle is exactly 90 degrees?
  • A Acute angle
  • B Obtuse angle
  • C Right angle
  • D Straight angle
12 What is the product of 6 and 7?
  • A 13
  • B 36
  • C 42
  • D 49
13 If a clock shows 3:15, what fraction of an hour has passed since 3:00?
  • A 1/4
  • B 1/3
  • C 1/2
  • D 3/4
14 What is the smallest 3-digit number?
  • A 100
  • B 101
  • C 99
  • D 001
15 Which shape has three vertices and three sides?
  • A Square
  • B Circle
  • C Triangle
  • D Rectangle
16 What is the remainder when 25 is divided by 4?
  • A 0
  • B 1
  • C 2
  • D 3
17 If you have 1 litre of water, how many millilitres is that?
  • A 10 millilitres
  • B 100 millilitres
  • C 1000 millilitres
  • D 10000 millilitres
18 Which number is divisible by both 2 and 5?
  • A 25
  • B 32
  • C 40
  • D 51
19 What is 1/2 + 1/4?
  • A 1/6
  • B 2/6
  • C 3/4
  • D 3/8
20 A cube has how many faces?
  • A 4
  • B 6
  • C 8
  • D 12
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