3 - Digit Subtraction Split
Materials: Subtraction Split Boards (3-digit - 3 - digit)
- Choose a line of four problems from the Subtraction Split board (vertically,
horizontally, or diagonally). - Solve each problem by decomposing the addends into hundreds,tens and ones
before subtracting. Show your work. Sometimes you will need to split the larger
number so that each part is larger than each part of the smaller number.
Example 1:
764 - 436 700 + 60 + 4- 400 + 30 + 6 becomes
Example 2:- Repeat with another line of four problems.
50
700 + 60 + 14- 400 + 30 + 6
300 + 20 + 8 = 328
734 - 447700 + 30 + 4- 400 + 40 + 7 becomes
600 120
700 + 30 + 14- 400 + 40 + 7
200 + 80 + 7 = 287