Question

3. Estimate 2,137 68 by looking for a basic fact,

A basic fact that can be used is 21 ÷
4. Use the basic fact to rewrite
the division using numbers
near to the actual numbers.
5. Find the quotient of your
rewritten division problem.
Use a pattern to help.
1'
So, 2,137 ÷ 68 is about
2,137 ÷ 68
2,100 =
70 = ?
2,100
21 ÷ 7 =
210 ÷ 70 =
2,100 ÷ 70 =
21 tens divided into
groups of 7 tens
-210 tens divided into
groups of 7 tens

Answer 1

Because multiplication is a form of repeated addition, it follows that division is a form of repeated subtraction. For example, 15 ÷ 3 asks you to repeatedly subtract 3 from 15 until you reach zero: 15 – 3 = 12 – 3 = 9 – 3 = 6 – 3 = 3 – 3 = 0.