MACHINE SHOP CALCULATION - OD1640 - LESSON 1/TASK 1
Step 3.
Subtract the digit 6 from the
digit 7. 7 - 6 = 1. The remainder
is 1. The remainder must be less
than the divisor 3.
Step 4.
Since the remainder is less than
the divisor 3, bring down the next
digit, 5.
Step 5.
Divide the number 15 by 3.
15 ƒ 3 = 5. Write the 5 above
the 5 in ones position.
Step 6.
Multiply the divisor 3 by the
digit 5. 3 x 5 = 15. Write the
number 15.
Step 7.
Subtract the number 15 from 15.
15 - 15 = 0, indicating that the
calculation is complete.
Step 8.
Check by multiplying the quotient
by the divisor. 25 x 3 = 75.
3.
Common Fractions
a.
General. A fraction is any part of an object or number. For example,
figure 2 on the following page shows a block of wood as one unit. When it
is cut in half, each piece becomes a fraction of the original unit, 1 of 2
equal parts, or 1/2 of the original unit. Cut each of these halves in half
again and each piece is now 1 of 4 equal parts, or 1/4 of the original unit.
b.
Definitions.
(1) Fraction. A fraction is an indicated division. It expresses one or
more of the equal pieces or parts into which something has been divided.
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