How do you write five and fifty-five thousandths in decimal form?
Five and fifty-five thousandths = 5.055
!:*)
Tuesday, May 29, 2012
Thursday, May 24, 2012
Math Computation Part 1
Samuel F. Campbell May 23, 2012
Page 1
EXAMPLE # 1
_26_
7) 128
26
7) 128
Example # 2
1.20
+0.85
1.05
Example # 3
270 x 200 =
270 27
x20 or x 2
54,00 54 and replace the two zeros. plus one for tens place.
Example # 4
672 / 6
_112_
6) 672
Example # 5
212
x8
1,696
Example # 6
600 x 245 =
245
x 6XX
147,0XX
Samuel F. Campbell May 23, 2012
Page 2
Example # 7
40 x 24 =
40 24
x 24 OR x 4X
96X = 960
Example # 8
____
12)384
32
12)384
36
24
24
Example # 9
4500 / 3 =
15
3)45xx
30
15
15
Example # 10
3 3/9 - 2 1/9 = 1 2/9
(3 - 2) (3/9 -1/9) = 1 2/9
Samuel F. Campbell May 23, 2012
Page 3
Example # 11
2.88 / 16 =
0.1 8
16) 2.8 8
1 6
1 2 8
1 2 8
Example # 12
54 - 0.024
54.000
0.024
53.976
Example # 13
$3.23
- $2.80
$0.43
Example # 14
3/8
- 2/8
1/8
Example # 15
2/9 / 2 =
2/9 /2/1 =
2/9 x 1/2 = 2/18 =1/9
Example # 16
20% of 40 = ?
20 x 40 = ?
100
2x x 4x = 8
1xx
Samuel F. Campbell May 23, 2012
Page 2
34.2 x 4 =
34.2
x 4.0
136.8x
136.80
Example # 18
3 - -1 =
3
-1
2
Example # 19
62% of ____ = 62
100 62 x ___ = 62 x 100
62 100 62
___ = 100
Example # 20
-54 / -2 =
27
-2) -54
4
14
14
= 27
Example # 21
What % of 100 is 33
? % x 100 = 33
?% x 100 x 100 = 33 x 100
100 100 100 100
?% = 33
100
= 33
Samuel F. Campbell May 23, 2012
Page 2
12+ -1 + -1 =
12
-1
+ -1
10
Example # 23
1/2 / 4/5 =
1/2 x 5/4 = 5/8
Example # 24
15% of ___ = 30
15% x ___ = 30
100 100
15
100
2 x 100 = ___ = 200
15) 30
Example # 25
-2 - 15 =
-2
- -5
-7
Page 1
Math Computation
EXAMPLE # 1
_26_
7) 128
26
7) 128
Example # 2
1.20
+0.85
1.05
Example # 3
270 x 200 =
270 27
x20 or x 2
54,00 54 and replace the two zeros. plus one for tens place.
Example # 4
672 / 6
_112_
6) 672
Example # 5
212
x8
1,696
Example # 6
600 x 245 =
245
x 6XX
147,0XX
Samuel F. Campbell May 23, 2012
Page 2
Math Computation
Example # 7
40 x 24 =
40 24
x 24 OR x 4X
96X = 960
Example # 8
____
12)384
32
12)384
36
24
24
Example # 9
4500 / 3 =
15
3)45xx
30
15
15
Example # 10
3 3/9 - 2 1/9 = 1 2/9
(3 - 2) (3/9 -1/9) = 1 2/9
Samuel F. Campbell May 23, 2012
Page 3
Math Computation
Example # 11
2.88 / 16 =
0.1 8
16) 2.8 8
1 6
1 2 8
1 2 8
Example # 12
54 - 0.024
54.000
0.024
53.976
Example # 13
$3.23
- $2.80
$0.43
Example # 14
3/8
- 2/8
1/8
Example # 15
2/9 / 2 =
2/9 /2/1 =
2/9 x 1/2 = 2/18 =1/9
Example # 16
20% of 40 = ?
20 x 40 = ?
100
2x x 4x = 8
1xx
Samuel F. Campbell May 23, 2012
Page 2
Math Computation
Example # 17 34.2 x 4 =
34.2
x 4.0
136.8x
136.80
Example # 18
3 - -1 =
3
-1
2
Example # 19
62% of ____ = 62
100 62 x ___ = 62 x 100
62 100 62
___ = 100
Example # 20
-54 / -2 =
27
-2) -54
4
14
14
= 27
Example # 21
What % of 100 is 33
? % x 100 = 33
?% x 100 x 100 = 33 x 100
100 100 100 100
?% = 33
100
= 33
Samuel F. Campbell May 23, 2012
Page 2
Math Computation
Example # 2212+ -1 + -1 =
12
-1
+ -1
10
Example # 23
1/2 / 4/5 =
1/2 x 5/4 = 5/8
Example # 24
15% of ___ = 30
15% x ___ = 30
100 100
15
100
2 x 100 = ___ = 200
15) 30
Example # 25
-2 - 15 =
-2
- -5
-7
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