Page 23 - Touchpad Mathematics_Ver1.0_C4

Example 4. Compare:
a. 9728 and 9706 b. 6543 and 6598

Solution. a. Th H T O b. Th H T O
9 7 2 8 6 5 4 3

9 7 0 6 6 5 9 8

Same 20 > 0 Same 40 < 90

So, 9728 > 9706. So, 6543 < 6598.
If all other digits except the ones are the same, then compare the ones digits.

The number with the greater digit in the ones place is greater.

Example 5. Compare:

a. 8732 and 8734 b. 5498 and 5494

Solution. a. b. T O b. Th H T O
Th H
8 7 3 2 5 4 9 8

8 7 3 4 5 4 9 4

Same 2 < 4 Same 8 > 4

So, 8732 < 8734. So, 5498 > 5494.

grEAtESt AND SMALLESt NUMbErS

Example 1. Find the greatest number in the following group.

2648 369 2658

Solution.

Step 1. Write the numbers in the place value chart. Th H T O
Step 2. Remove the smallest number from the group. 2 6 4 8
Here, 369 is the smallest number. 3 6 9

2648 369 2658 2 6 5 8

Step 3. Remove the smaller number from the remaining
numbers. Th H T O

Here, 2648 < 2658. 2 6 4 8

2648 2658 2 6 5 8

Step 4. 2658 is the largest number in the group. Same 40 < 50

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Numbers