Page 107 - New Medley 4 Semester 1

Counting by two’s: Gap of two between every two successive numbers.

Suppose we start with 32583.

Then counting by two’s we get: 32583, 32585, 32587, 32589 and so on.

Counting by ten’s: Gap of ten between every two successive numbers.

Suppose we start with 244105.

Then counting by ten’s we get: 244105, 244115, 244125 and so on.

Counting by hundred’s: Gap of hundred between every two successive
numbers.

Suppose we start with 63108.

Then counting by hundred’s we get: 63108, 63208, 63308, 63408 and so on.

Example 19: Counting by fours write four numerals from 32695.

Solution: 32695 + 4 = 32699 32699 + 4 = 32703

32703 + 4 = 32707 32707 + 4 = 32711

The numerals are 32699, 32703, 32707 and 32711.

Example 20: Counting by two hundreds write four numerals from
323247.

Solution: The numerals are: 323447, 323647, 323847 and 324047

EXERCISE 1.5

A. Write the successor of each of the following.

1. 33129 2. 670513

B. Write the predecessor of each of the following.

1. 41521 2. 533752

C. Write the next two numbers for each of the following.
1. 41071 2. 623025

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