# Review for Unit Parts Quiz

Thursday 12/4/08

### What you need to know

The "quiz" tomorrow is just a "checkpoint" to make sure we are ready to continue on past the Forest of Unit Parts. So, it doesn't count for a lot (only 20 points) and it will only take part of the period, but you want to do well (15 or better) so that you can get a star on the U step of your syllabus, showing that you have successfully passed that obstacle.

The checkpoint covers only what we have done this week:
• Splitting up a unit into some number of parts, whether drawn as a box or drawn as multiples of the unit on a number line
• Identifying what is the unit, the denominator, and the part, in sentences, in pictures of units, and in pictures of number lines
• Writing relationships like "1/9×72 = 8" or "a fifth of a grok is a lirr" in both math and words, and translating between the two
• Drawing a number line to show a unit-part relationship
If you can do all the problems on this homework, you are in good shape. The checkpoint will also only be about as long as this homework.

### Identifying unit, denominator, and part

1. a) Identify the unit, denominator, and part in the picture below.

Unit:Denominator:Part:

b) In English: A          of a          is a         .

c) In math symbols:

2. a) Identify the unit, denominator, and part in the picture below.

Unit:Denominator:Part:

b) In English: A          of a          is a         .

c) In math symbols:

### Writing equivalences

1. a) Mark up the number lines below to show me that "A third of fifty one is the same as a fourth of sixty eight."

b) How would I write "A third of fifty one is the same as a fourth of sixty eight" in math symbols?

2. a) Mark up the units below to show me that "1/4 gorf = 1/8 blig."

b) How would I write "1/4 gorf = 1/8 blig" in words?

### Drawing number lines

Remember to draw at least the first two multiples of the unit.
1. Below, draw a number line in which units 50 long are split in fifths, and mark how long each piece is.

2. Below, draw a number line in which units 42 long are split into pieces 14 long. You will have to figure out the denominator in order to draw this correctly.

3. Below, draw a number line in which the units are split into four pieces, with each of the pieces 15 long. You will have to figure out what the unit is.