Regrouping for Double-Digit Subtraction Two-Digit Subtraction – Regrouping.
Repeated subtraction
1
A) Division using Repeated Subtraction Example: Solve 12 ÷ 2 using repeated subtraction Method: Take away by 2 until it gets zero result. 12 – 2 = 10 10 – 2 = 8 8 – 2 = 6 6 – 2 = 4 4 – 2 = 2 2 – 2 = 0 Therefore, 12 ÷ 2 = 6 B) How the calculator skip reading and counting? For example, key in 12 – 6 on the calculator then press “=” continuously until it displays zero result. Count how many times it is subtracted by 2? Answer: There are six 2s.
-
Upload
shidabahri810 -
Category
Technology
-
view
214 -
download
1
description
Transcript of Repeated subtraction
A) Division using Repeated Subtraction
Example: Solve 12 ÷ 2 using repeated subtraction
Method: Take away by 2 until it gets zero result.
12 – 2 = 10
10 – 2 = 8
8 – 2 = 6
6 – 2 = 4
4 – 2 = 2
2 – 2 = 0
Therefore, 12 ÷ 2 = 6
B) How the calculator skip reading and counting?
For example, key in 12 – 6 on the calculator then press “=” continuously until it displays zero result.
Count how many times it is subtracted by 2?Answer: There are six 2s.