Page 70 - MarceAlgebra Demystified

CHAPTER 3 Decimals 57

vertically, you can avoid the common problem of adding the numbers
incorrectly. For instance, 1:2 þ 3:41 is not 4.43. The ‘‘2’’ needs to be
added to the ‘‘4,’’ not to the ‘‘1.’’
1:20 (Add as many zeros at the end as you need.)
þ4:43
5:63

510:3 422:887 becomes 510:300
422:887
87:413

Practice

Rewrite as a vertical problem and solve.

1. 7:26 þ 18:1

2. 5 2:76

3. 15:01 6:328

4. 968:323 13:08

5. 28:56 16:7342

6. 0:446 þ 1:2

7. 2:99 þ 3

Solutions

1: 7:26 þ 18:1 7:26
þ18:10
25:36

2: 5 2:76 5:00
2:76
2:24