Calculation examples
Calculation |
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Arithmetic | 12 x 3 + 5 = | 12 | X | 3 | + | 5 | = |
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| 41. | |||
| 24 | +/– |
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| 4 | – | 2 | = |
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Constant | 34 + 57 = | 34 | + | 57 |
| = | The addend becomes a constant. | 91. | ||||||
| 45 + 57 = | 45 |
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| 102. | ||
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| (Subtraction and division are performed in |
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| 68 x 25 = | 68 | X | 25 | = | The multiplicand becomes a constant. | 1,700. | |||||||
| 68 x 40 = |
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| 40 |
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| 2,720. | ||
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Percentage | What is 10% of 200? | 200 | X | 10 | % |
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| 20. | |||
| What percentage is | 9 | 36 | % |
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| 25. | ||||
| 9 of 36? |
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What results from a | 200 | + | 10 | % |
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| 220. | ||||
| 10% increase of 200? | (or 200 | X |
| 10 | % | + | = | ) |
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Discount | What is 500 after a | 500 | – | 20 | % |
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| 400. | |||
| 20% discount? | (or 500 | X |
| 20 | % | – | = | ) |
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Square root | √ |
| = | 25 | – | 9 | = |
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| 4. |
25 – 9 |
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Power | (43)2 = |
| 4 X | = |
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| X | = |
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| 4,096. | ||
Reciprocal | 1/8 = |
| 8 |
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| 0.125 | |
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