SOLUTIONS TO FRAME 2-38 (SELF-TEST)
1. Add and reduce:
1
a.
1
2
1+2
3
+
=
=
=
3
3
3
3
b.
1
1
1x4
1
4
1
4+1
5
+
=
+
=
+
=
=
2
8
2x4
8
8
8
8
8
c.
3
1
3x3
1x4
=.
9 + 4
9+4
13
1 1/12
+
=
+
=
=
=
4
3
4x3
3x4
12 12
12
12
2. Subtract and reduce:
a.
12 _ 10
12 - 10
=.
2
=
7
7
7
7
b.
7 _ 1
7 _ 1x4
7 _ 4
7-4
3
=
=
=
=
8
2
8
2x4
8
8
8
8
c.
3 _ 1
3x3 _ 1x8
9 _ 8
9-8
1
=
=
=
=
8
3
8x3
3x8
24 24
24
24
3. Multiply and reduce:
1 4/10 = 1
a. 7
2
7x2
14
2/5
X
=
=
=
2
5
2x5
10
2
b. 2
1
2x1
2
2
1
X
=
=
=
=
12 2
3
4
3x4
12
6
4. Divide and reduce:
3
2
8
2x8
16
1 1/15
a. 2
=
X
=
=
=
5
8
5
3
5x3
15
5
b. 1
1
1
10
1 x 10
10
10
2
2
=
X
=
=
=
=
=
55
5
10
5
1
5x1
5
1
5. Change to improper fractions:
6x5+2
30 + 2
32
a. 6 2/5
=
=
=
5
5
5
b. 7
7x4
28
=
=
1 x4
4
End of Lesson 2
MD0900
2-18