fractions prequiz
TRANSCRIPT
How am I doing?
Am I ready for the test?
What do I need for this test review?
• Gather all your worksheets #1 – 12• Have a pencil ready.• You need to watch this screen as it will change
once per minute asking you to do a different problem. You should be able to do each problem in 45 seconds or less and check for a few more. You will be given more than 45 seconds for each problem unless it can be done without figuring.
• Show all your work on your paper. You may use your worksheets and notes for tomorrow’s test.
#1
• Draw a circle. Divide it into fourths.
• Fill in three-fourths of the circle.
Answer to follow.
#1Answer
• Draw a circle. Divide it into fourths.
• Fill in three-fourths of the circle.
Answer to follow.
#2
• Copy these circles.
• Circle
of the circles.
5
9
#2 Answer
• Copy these circles.
• Circle
of the circles.
5
9
#3
• Put these fractions into simplest form. 4
8
3
6
#3 Answers
• Put these fractions into simplest form. 4 1
8 2
3 1
6 2
#4
• Put these fractions into simplest form. 12
15
16
20
#4 Answers
• Put these fractions into simplest form. 12
15
16
20
4
5
4
5
#5
• Put these fractions into simplest form. 7
56
22
33
1
8
2
3
#6
• Put these fractions into simplest form. 30
35
14
28
1
8
1
2
#6 Answers
• Put these fractions into simplest form. 30
35
14
28
1
8
1
2
#7
• Put these fractions into simplest form. 6
5
12
11
115
1112
#8
• Multiply these fractions. Put into simplest form if necessary.
3 2
4 3x
4 3
9 2x
6 1
12 2
12 6 2
18 9 3
#9
• Multiply these fractions. Put into simplest form if necessary.
2 9
3 10x
7 3
12 14x
18 3
30 5
1
8
1
24
1
#10
• Multiply these fractions. Put into simplest form if necessary.
1 1 4
2 3 7x x
4 2
42 21
#11
• Rewrite as a multiplication statement. Do not multiply yet. Just rewrite like the example below.
1 6 1 5
10 5 10 6x
2 5
3 6
2 6
3 5x
#12
• Rewrite as a division statement. Then multiply like the example below.
1 6 1 5 5 1
10 5 10 6 60 12x
9 3
2 4
9 4
2 3x 36
66
#13
• Rewrite this division statement and solve.
• Don’t forget that you can put a 1 under a whole number to make a fraction.
62
13
6 2
13 1
6 1
13 2x 6
26
3
13
#14
• Add these fractions.
• Simplify if necessary.
8
9
1
3
8
9
3
9
11
9219
#15
• Add these fractions.
• Simplify, if necessary.
7
10
1
4
14
20
5
20
19
20
#16
• Add these fractions.
• Simplify, if necessary.
5
12
1
4
5
12
4
12
9
12 3
4
#17
• Add these fractions.
• Simplify, if necessary.
7
8
3
16
14
16
3
16
17
16
1116
#18
• Add these fractions after rewriting in a column.
• Simplify, if necessary.
7
8
5
6
14
16
3
16
17
16
1116
7 5
8 6
Part Two
Fractions to Decimals
&
Decimals to Fractions
#19
• Change these fractions to decimal numbers. You should get these into memory as they will show up again and again.
1
2
1
4
3
40.5 0.25 0.75
#20
• Change these fractions to decimal numbers.
1
3
2
3
7
100.3 0.6 0.7
#21
Change these fractions to decimal numbers.
7
100
2
5
5
100.07 0.4 0.5
#22
Change these fractions to decimal numbers.
19
100 2
9
5
1000
0.19 0.9
0.005
#23Change these decimal numbers to
fractions. Put in simplest form, if necessary.
39
1002
3
625
1000
0.39 0.6
0.625Divide topand bottomby 25
25
40
Divide topand bottomby 25 5
8
#24Change these decimal numbers to
fractions. Put in simplest form, if necessary.
45 9
100 20
7
9
125
1000
0.45 0.7
0.125Divide topand bottomby 25
5
40
Divide topand bottomby 25
1
8
Change the Mixed Numbers to Fractions
• Remember the procedure:
• Whole number times denominator
• Add the numerator.
• Put the new number over the old denominator.
243
4 3 12
3
15
3
#25
• Change the mixed numbers to fractions
172
7 2 14 1
15
2
#25
• Change the mixed numbers to fractions
345
4 5 20 3
23
5
#26
• Change the mixed numbers to fractions
798
9 8 72 7
79
8
#27
Change the mixed numbers to fractions 1
102
10 2 20 1
21
2
Some Random Problems To Review
#28
• Rewrite as a multiplication statement. Then solve.
5 5
12 8 5 8
12 5x 40 4
60 6
2
3
#29
• Rewrite as a multiplication statement. Then solve.
11 7
12 24 11 24
12 7x
11 2
1 7 22
7
22 13
7 7
#30
• Change these fractions to decimal numbers.
5
9
1
10
5
80.5 0.1 0.625