PARTS OF NATURAL NUMBERS

PROBLEMS (2)

Do the problem yourself first!

Parts, plural.

16.  a)  Let this straight line represent 6, and divide it into thirds.

16.  a)  (You must cut the line how many times?)

14.  b)  What number is the third part of 6?  2

16.  c)  How much are two thirds of 6?  4

17.  How do we find two thirds of any number?

Name one third, then double it.

18.  How much is two thirds of

15?  10            18?  12            12?  8

24?  16             9?  6              3?  2

19.  a)  Let this straight line represent 32, and divide it into fourths.

17.  a)  (You must cut the line how many times?)

17.  b)  What number is the fourth part of 32?  8

17.  c)  How much are three fourths of 32?  24

20.  How do we find three fourths of any number?

Name one fourth, then multiply by 3.

21.  How much is three fourths of

20?  15            12?  9            8?  6

24?  18            16?  12            4?  3

22.  How do we find any parts, plural?

First name the part, "One."  Then multiply.

23.  How much is four fifths of

15?  12            10?  8            30?  24

45?  36            20?  16           5?  4

24.  How much is

 a)  Three eighths of 32?  12 b)  Five eighths of 24?  15 c)  Three fifths of 20?  12 d)  Five sixths of 30?  25 e)   Nine tenths of 60?  54 f)   Nine tenths of 10?  9 g)  Two thirds of 36?  24 h)  Three fourths of 28?  21 i)  Four ninths of 18?  8 j)  Two sevenths of 7?  2

25.  Parts of 100%.  What percent is each of the following?

25.  a)  Three fourths of 100%.  75%

25.  b)  Two fifths of 100%.  40%

25.  c)  Three fifths of 100%.  60%

25.  d)  Four fifths of 100%.  80%

25.  e)  Two hundredths of 100%.  2%

25.  f)  Nine hundredths of 100%.  9%

25.  g)  Ninety-nine hundredths of 100%.  99%

25.  h)  Eight tenths of 100%.  80%

25.  i)  Three twentieths of 100%.  15%

26.  a)  Into which parts can 6 be divided?  Halves, thirds, sixths.

24.  b)  Each number less than 6 is which part of 6, or which parts of 6?

1 is the sixth part of 6.

2 is two sixths, and also the third part, of 6.

3 is three sixths, and also half of 6.

4 is four sixths, and also two thirds, of 6.

5 is five sixths of 6.

Continue on to the next Lesson.

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