**MACHINE SHOP CALCULATION - OD1640 - LESSON 1/TASK 1**

FIGURE 4.

1/4 IS LARGER THAN 1/6.

a.

*Rule 1*.

When two fractions have equal numerators and denominators

they are of equal value.

EXAMPLE

3/4 and 3/4 are equal fractions.

b.

*Rule 2*.

When two fractions have equal denominators, the fraction

having the larger numerator is the greater in value.

EXAMPLE

3/7 and 4/7.

4/7 is the larger fraction as it represents 4 of 7 equal

parts, whereas 3/7 represents only 3 of 7 equal parts.

c.

*Rule 3*.

When two fractions have the same numerator, the fraction

having the larger denominator is always the smaller.

EXAMPLE

3/4 and 3/8. 3/8 is a smaller fraction than 3/4. 3/8 is only 3 of 8 equal

parts, whereas 3/4 is 3 of 4 equal parts, as shown in figure 5 on the

following page.

**8**