Chapter 3.1 (Mathematics 5)

Subtraction of up to 6-digit numbers without regrouping

Subtraction of up to 6-digit numbers without regrouping

Group Activity 1

What is 73 649 – 2 516?

In groups of five:

  1. Represent the number 73 649 on an abacus.
  2. Show how to subtract 2 511 from the number shown on the abacus as follows:
    1. Remove 6 rings from the ones.
    2. Remove 1 ring from the tens.
    3. Remove 5 rings from the hundreds.
    4. Remove 2 rings from the thousands.
  3. Read the number represented by the remaining rings on the abacus.
  4. Discuss and share the results with other groups.

Note

  1. A number from which another number is to be subtracted is called a minuend.
  2. The number being subtracted is called a subtrahend.

Example 1

What is 795 648 – 41 325?

Note

Align the digits according to their place value.

Exercise A

A1

In pairs, work out:

A2

Work out:

857 386  647 356 = 

Sh 456 750  Sh 352 430 = Sh 

125 573  123 432 = 

679 856  624 632 =