Division as the Inverse of Multiplication
Dividing is undoing equal grouping: the dividend equals divisor times quotient, and repeated subtraction reaches the same answer. Learners meet equal sharing, the multiply-then-divide two-step, and the relation that a larger dividend yields a larger quotient. This unknown-factor view is the basis for all later division reasoning.
grade 3 OA Create a Physical RepresentationConvert to Algebra
진행 단계 (4)
3-1 1. 나누어지는 수는 나누는 수의 곱이다. 3.OA.B.63.OA.A.4
3-1 2. 나누어지는 수와 몫은 뺄셈으로 분해된다. 3.OA.A.23.OA.A.3
3-1 3. 나누어지는 수를 먼저 구한다. 3.OA.D.83.OA.A.3
3-1 4. 큰 수를 나눌수록 몫이 크다. 3.OA.A.23.OA.A.3