Learn Division: Interactive Problems and Worked Examples
Use the question set below to practice division. If you want a refresher on division facts, remainders, and long division steps, click Start lesson to open a step-by-step guide.
Jawab rangkaian soal dan tinjau kesalahanmu di akhir.
How this division practice works
1. Take the practice set: answer the questions below to practice division facts, mental math, and basic division.
2. Open the lesson (optional): review division strategies with examples, quick checks, and reminders for remainders and estimation.
3. Retry: return to the question set and apply the strategy right away to improve speed, accuracy, and confidence.
What you will learn in the division lesson
Meaning, models & vocabulary
Division as sharing equally (partitive division)
Division as grouping (quotative division)
Dividend, divisor, quotient, and remainder
Division & multiplication relationship
Division as the inverse of multiplication
Fact families: \(a\times b=c\) connects to \(c\div a=b\) and \(c\div b=a\)
Division facts & mental strategies
Patterns for ÷1, ÷2, ÷5, ÷10 and powers of ten
Halving and doubling to simplify
Use multiplication to check: \(q\times d + r = n\)
Remainders & long division
Remainders explained: \(n = d\times q + r\) with \(0 \le r < d\)
Estimate, divide, multiply, subtract, bring down (repeat)
Interpreting remainders in word problems (round, leftover, or fractional answer)
Purpose: Build a clear understanding of division and learn reliable strategies for division facts, remainders, and long division.
Success criteria
Explain division as sharing equally (partitive) and as grouping (quotative).
Use the inverse relationship between multiplication and division to solve problems.
Use fact families to connect \(a\times b=c\) with \(c\div a=b\) and \(c\div b=a\).
Understand and interpret remainders using \(n = d\times q + r\).
Use efficient strategies for division facts (÷1, ÷2, ÷5, ÷10, halving, and checking with multiplication).
Divide larger numbers using estimate → divide → multiply → subtract → bring down (long division steps).
Key vocabulary
Dividend: the number being divided (in \(a\div b\), \(a\) is the dividend).
Divisor: the number you divide by (in \(a\div b\), \(b\) is the divisor).
Quotient: the result of division.
Remainder: what is left over when a division does not divide evenly.
Quick pre-check
Pre-check 1: Which expression means "share 12 among 3 equal groups"?
Hint: Division is used when you split into equal groups or ask how many groups fit.
Pre-check 2: Compute \(12\div 3\).
Hint: If \(3\times 4=12\), then \(12\div 3=4\).
Sharing & Grouping
Division as sharing and as grouping
Learning goal: Recognize two meanings of division and choose the correct model for a word problem.
Key idea
Division answers "How many in each group?" or "How many groups?" depending on the situation:
Sharing equally (partitive): Split \(n\) items into \(d\) equal groups. How many in each group? That is \(n\div d\).
Grouping (quotative): Make groups of size \(d\). How many groups fit into \(n\)? That is also \(n\div d\).
Worked example
Example: \(15\div 3\)
Sharing: 15 stickers shared into 3 equal groups gives 5 in each group. Grouping: How many groups of 3 fit in 15? There are 5 groups. So, \(15\div 3 = 5\).
Try it
Try it 1: "24 cookies are shared equally among 6 friends." What operation matches?
Hint: Sharing equally means divide the total by the number of groups.
Try it 2: Compute \(49\div 7\).
Hint: Use a related multiplication fact: \(7\times ? = 49\).
Summary
Division can mean sharing equally or counting how many groups fit.
Both models use the same notation \(n\div d\).
Inverse Relationship
Division and multiplication are inverses
Learning goal: Use multiplication to solve division problems and check answers quickly.
Key idea
Division "undoes" multiplication. If \(a\times b=c\), then: \(\,c\div a=b\) and \(\,c\div b=a\). This relationship builds division facts from multiplication facts.
Worked example
Example: \(56\div 8\)
Think: \(8\times ? = 56\). Since \(8\times 7 = 56\), the quotient is 7. Check: \(7\times 8 = 56\). Correct.
Try it
Try it 1: Compute \(48\div 8\).
Hint: Find the number that makes \(8\times ? = 48\).
Try it 2: If \(9\times 4 = 36\), which division sentence is true?
Hint: Fact families connect one multiplication fact to two division facts.
Summary
Use multiplication facts to find division quotients faster.
Always check with \(q\times d\) to confirm.
Facts & Strategies
Efficient strategies for division facts
Learning goal: Use patterns and mental strategies to divide quickly and accurately.
Key patterns
÷1: the quotient is the same number
÷10: move the decimal one place left (for base-10 numbers)
÷5: divide by 10, then double
÷2: halve
÷4: halve twice
÷8: halve three times
Check: \(q\times d = n\) (or \(q\times d + r = n\) with remainders)
Worked example
Example: \(72\div 9\)
Think: \(9\times ? = 72\). Since \(9\times 8 = 72\), the quotient is \(8\). Check: \(8\times 9 = 72\).
Try it
Try it 1: Compute \(81\div 9\).
Hint: Find \(?\) so that \(9\times ? = 81\).
Try it 2: Compute \(120\div 8\) using halving.
Hint: ÷8 means halve three times: \(120\to 60\to 30\to 15\).
Summary
Use patterns first (÷1, ÷2, ÷5, ÷10, powers of ten).
Use halving for ÷4 and ÷8, and multiplication to check results.
Remainders
Remainders and what they mean
Learning goal: Understand remainders and represent division with the equation \(n = d\times q + r\).
Key idea
When a number does not divide evenly, we can write: \(\,n = d\times q + r\), where \(0 \le r < d\). This shows the quotient \(q\) and the remainder \(r\).
Try it 1: What is the quotient in \(31\div 7\)? (quotient only)
Hint: Find the biggest multiple of 7 that is ≤ 31.
Try it 2: What is the remainder in \(31\div 7\)? (remainder only)
Hint: If \(7\times 4 = 28\), then \(31-28 = 3\).
Worked solution
Find the largest multiple of 7 that fits in 31: \(7\times 4=28\). Subtract: \(31-28=3\). So \(31\div 7 = 4\) remainder \(3\), and \(31 = 7\times 4 + 3\).
Summary
Remainders satisfy \(0 \le r < d\).
Use \(d\times q + r\) to check the division result.
Long Division
Long division step-by-step
Learning goal: Divide multi-digit numbers using estimate and repeated subtraction of multiples (the long division algorithm).
Key steps
Estimate: How many times does the divisor fit?
Multiply: Multiply the divisor by the estimate.
Subtract: Find what remains.
Bring down: Bring down the next digit and repeat.
Check: divisor × quotient + remainder = dividend.
Worked example
Example: \(84\div 6\)
Estimate: \(6\) goes into \(8\) one time. Multiply: \(1\times 6=6\). Subtract: \(8-6=2\). Bring down 4 → 24. Estimate: \(6\) goes into \(24\) four times. Multiply: \(4\times 6=24\). Subtract: \(24-24=0\). So \(84\div 6 = 14\).
Try it
Try it: Compute \(96\div 8\).
Hint: \(8\) goes into \(9\) once (remainder 1), bring down 6 to make 16, then \(16\div 8=2\). So the quotient is 12.
Worked solution
\(96\div 8\): \(8\) goes into \(9\) one time → remainder \(1\). Bring down 6 → 16. \(16\div 8 = 2\) remainder \(0\). So \(96\div 8 = 12\). Check: \(12\times 8 = 96\).
