SOLUTIONS TO FRAME 1-36 (SELF-TEST)
1. a.
455
x 33
1365
13650
15015
b.
3,690
- 2,460
1,230
c.
44
275
9
328
8
d. 50/ 400
400
0
2. a.
135r1
3/ 406
Check:
135
3
x3
10
405
9
+1
16
406
15
1
b.
389
Check:
122
27
27
+122
+ 389
538
538
c.
47
Check:
22
47
x 22
x 47 OR
22/ 1034
94
154
88
94
88
154
1034
1034
154
0
d.
996
Check:
939
- 57
+ 57
939
996
2 = 16 + 2 = 18]
3. a. 18 [6 + 4
b. 14 [2 (4 + 3) = 2 x 7 = 14]
c. ac + ad [same as (a+b)(c+d) with b = 0] [using "b" above: (2)(4) + (2)(3) = 8 + 6 = 14]
MD0900
1-17