Number Play: Practice 4

Practise focused skills from Number Play

MathematicsGrade 8Mixed12 questions24 min

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Section A: Core Practice · 6 questionsSection B: Reasoning and Application · 6 questions

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Section A: Core Practice

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Choose the best answer for each question.

Question 1

EasyQuestion

A three-digit number is $100a+10b+c$ . The reversed number is $100c+10b+a$ . What is the difference original minus reversed?

Topic: Patterns and Logical Reasoning · Skill: Use parity to reason about number results

Question 2

EasyQuestion

Which approach is best for proving a number-game pattern?

Topic: Patterns and Logical Reasoning · Skill: Generalise number-game patterns

Question 3

MediumQuestion

Use the digit-sum test. Is $1116$ divisible by $3$ ?

Topic: Divisibility and Factors · Skill: Apply divisibility tests for 2, 3, 4, 5, 6, 9, 10, and 11

Question 4

MediumQuestion

Use the digit-sum test. Is $2505$ divisible by $3$ ?

Topic: Divisibility and Factors · Skill: Find factors and multiples efficiently

Question 5

MediumQuestion

What is the greatest proper factor of $48$ ?

Topic: Divisibility and Factors · Skill: Use prime factorisation in number puzzles

What this assignment covers

Progressive Grade 8 Math practice for Number Play covering Digit and Place-Value Puzzles, Divisibility and Factors, Patterns and Logical Reasoning.

Skills and sections

Use parity to reason about number results, Generalise number-game patterns, Apply divisibility tests for 2, 3, 4, 5, 6, 9, 10, and 11, Find factors and multiples efficiently, Use prime factorisation in number puzzles

Section A: Core Practice: 6 questions
Section B: Reasoning and Application: 6 questions