ADDITION / SUMA 12.45 + 36.62 – 93.20 =
(1) | (2) | (3) |
| (4) |
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| 12.45 | 12.45 |
| 12.45 | + |
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| 36.62 | 49.07 |
| 36.62 | + |
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|
| 93.20 | 44.13– |
| 93.20 | – |
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| 44.13– | – | 44.13 |
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REPEAT ADDITION AND SUBTRACTION /
REPETICIÓN DE SUMAS Y RESTAS
123 + 123 + 123 + 456 – 100 – 100 =
(1) | (2) | (3) | (4) |
|
| 123 | 123. | 123. | + |
|
| 246. | 123. | + |
|
| 369. | 123. | + |
| 456 | 825. | 456. | + |
| 100 | 725. | 100. – | |
|
| 625. | 100. – | |
|
|
| 625. |
|
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| 625. |
|
|
ADDITION AND SUBTRACTION WITH ADD MODE /
SUMA Y RESTA CON MODO DE SUMA
12.45 + 16.24 + 19.35 – 5.21 =
(1) |
| (2)*1 | (3) | (4) |
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| 1245 | 12.45 | 12.45 + | |
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| 1624 | 28.69 | 16.24 + | |
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| 1935 | 48.04 | 19.35 | + |
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| 521 | 42.83 | 5.21 | – |
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| 42.83 | 42.83 |
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*1 : The 
key was not used in the entries.
*1 : La tecla 
no ha sido usada en los registros.
– 30 –
