Division: Division is the process of splitting a number into equal parts. It is the inverse operation of multiplication.
- Identify the dividend (the number being divided): 36
- Identify the divisor (the number dividing): 4
- Determine how many times the divisor fits into the dividend
- Check by multiplying the quotient by the divisor
We need to find how many groups of 4 can be made from 36 items.
Think: "What number times 4 equals 36?" Since 4 × 9 = 36, then 36 ÷ 4 = 9.
9 × 4 = 36, so 36 ÷ 4 = 9
36 divided by 4 equals 9.
• Division relationship: Dividend ÷ Divisor = Quotient
• Multiplication check: Quotient × Divisor = Dividend
• Equal sharing: Division represents equal distribution
Remainder: The amount left over when one number cannot be evenly divided by another.
6 × 4 = 24, which is less than 29. 6 × 5 = 30, which is greater than 29.
29 - 24 = 5, so the remainder is 5.
(Quotient × Divisor) + Remainder = (4 × 6) + 5 = 24 + 5 = 29 ✓
29 divided by 6 equals 4 with a remainder of 5.
• Division algorithm: Dividend = (Divisor × Quotient) + Remainder
• Remainder condition: Remainder must be less than the divisor
• Verification: Always check by multiplying and adding the remainder
Word problems: Real-life scenarios that require mathematical operations to solve.
Total eggs = 42, Eggs per carton = 6
42 ÷ 6 = ?
42 ÷ 6 = 7 (because 6 × 7 = 42)
The farmer can fill 7 full cartons.
The farmer can fill 7 full cartons.
• Equal sharing: Division represents distributing items equally
• Problem identification: Look for keywords like "per," "each," "how many"
• Verification: Check by multiplying the result by the number of groups
Repeated subtraction: A method where you repeatedly subtract the divisor from the dividend until you reach zero.
Begin with 35
35 - 7 = 28, 28 - 7 = 21, 21 - 7 = 14, 14 - 7 = 7, 7 - 7 = 0
We subtracted 7 five times, so 35 ÷ 7 = 5
35 ÷ 7 = 5
• Subtraction pattern: Division as repeated subtraction
• Counting method: The number of subtractions equals the quotient
• Verification: Check by multiplying divisor × quotient
Array model: A visual representation using rows and columns to show division as equal grouping.
We have 40 items to arrange
We want to divide into 8 equal groups
Create 8 rows with 5 items each (or 8 columns with 5 items each)
Each group has 5 items, so 40 ÷ 8 = 5
40 ÷ 8 = 5
• Visual representation: Arrays help visualize equal groups
• Equal distribution: Division creates equal-sized groups
• Verification: Multiply groups by items per group to check