1. Review Mathematics Skills
Lesson R.2 Adding and Subtracting Review

2. Lesson R.2 Adding and Subtracting Review
When adding or subtracting stack numbers one on top of the other with place values and decimal points aligned.
is re-written as
563.45
+ 45.7

3. Lesson R.2 Adding and Subtracting Review
Add the following
Step 1: Stack numbers with place values
and decimal points aligned 1
Step 2: Add columns from
right to left remembering to
carry over numbers when total
is larger than 9.
2.36
1.52
+1.4 5 . 2 8

4. Lesson R.2 Adding and Subtracting Review
Subtract the following
25.68 – 17.54
Step 1: Stack numbers with place values
and decimal points aligned 1 15
Step 2: Subtract columns from
right to left remembering borrow
when bottom number is larger
than the top number.
25.68
-17.54 8 . 1 4

5. Lesson R.2 Adding and Subtracting Review
Assignment
Worksheet R.2 odd #’s only
*Do work on a separate sheet of paper