About Subtraction:
We can easily subtract single-digit whole numbers without the use of a pencil and paper. When we start subtracting multi-digit whole numbers, it becomes more difficult to perform the operation in one’s head. Generally, we subtract multi-digit whole numbers using a process known as vertical subtraction.
Test Objectives
- Demonstrate the ability to set up a vertical subtraction
- Demonstrate the ability to perform a vertical subtraction
- Demonstrate the ability to use the borrowing procedure
#1:
Instructions: Subtract each.
a) 71 - 55
b) 312 - 18
c) 1090 - 1002
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#2:
Instructions: Subtract each.
a) 572 - 101
b) 3001 - 865
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#3:
Instructions: Subtract each.
a) 15,984 - 14,297
b) 13,215 - 9087
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#4:
Instructions: Subtract each.
a) 313,975 - 303,989
b) 4,277,680 - 305,000
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#5:
Instructions: Subtract each.
a) 80,773,916 - 42,874
b) 919,121,426 - 141,914,627
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Written Solutions:
#1:
Solutions:
a) 16
b) 294
c) 88
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#2:
Solutions:
a) 471
b) 2136
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#3:
Solutions:
a) 1687
b) 4128
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#4:
Solutions:
a) 9986
b) 3,972,680
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#5:
Solutions:
a) 80,731,042
b) 777,206,799
