Unit 4: Develop Division Strategies

Division: splitting into equal parts or groups. It is the result of "fair sharing".

Divisor: The number we divide by. Dividend ÷ divisor = quotient. Example: in 12 ÷ 3 = 4, 3 is the divisor.

Dividend: The amount that you want to divide up. Dividend ÷ divisor = quotient. Example: in 12 ÷ 3 = 4, 12 is the dividend

Quotient: The answer after we divide one number by another. Dividend ÷ divisor = quotient. Example: in 12 ÷ 3 = 4, 4 is the quotient.

Partial Quotients: Any of the division results we get leading up to an overall division result.

Remainders: An amount left over after division (happens when the first number does not divide exactly by the other). Example: 19 cannot be divided exactly by 5. The closest you can get without going over is 3 x 5 = 15, which is 4 less than 19. So 4 is the remainder. So the answer of 19 ÷ 5 is "3 with a remainder of 4", which means that 19 can be divided by 5 into 3 parts but with 4 left over, and is usually written "3 R 4".

Inverse Operation: The operation that reverses the effect of another operation. Example: Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7.

2 Digit by 1 Digit without Remainders

3 Digit by 1 Digit without Remainders

Arithmetic Four