No. |
Title | Add time |
1 | Mentally Adding Two-Digit Numbers 3423 | 2006-10-02 20:13:55 |
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2 | Adding Two-Digit Numbers with Paper and Pen... 3131 | 2006-10-02 20:25:19 |
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3 | Estimating a sum by rounding 3314 | 2006-10-04 13:23:49 |
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4 | Front End Estimation of Sums 7016 | 2006-10-04 13:32:06 |
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5 | Add three 2-digit Numbers 3195 | 2006-10-17 16:02:05 |
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6 | Adding Three Digit Numbers 2698 | 2006-10-17 16:07:35 |
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7 | Adding Numbers Arranged Vertically 2725 | 2006-11-04 20:39:54 |
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8 | Changing Hours and Minutes to Minutes 2833 | 2006-11-14 22:08:49 |
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9 | Addition of Hours and Minutes 4404 | 2006-11-18 22:12:00 |
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10 | Add hours 2680 | 2006-11-18 22:40:56 |
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11 | Add half hours 1561 | 2006-11-18 22:42:53 |
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12 | Place Values by Adding 1604 | 2006-11-19 13:05:38 |
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13 | Addition equations with 2 digit numbers 1496 | 2006-11-24 19:05:52 |
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14 | Addition equations with 3 digit numbers 1496 | 2006-11-24 19:06:54 |
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15 | Adding Fractions with the same Denominator 1644 | 2006-11-27 19:37:05 |
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16 | Subtraction Equations - Two Digit Numbers 2051 | 2006-12-14 22:44:16 |
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17 | Estimating a difference by rounding 2382 | 2006-12-15 22:43:23 |
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18 | Subtracting Two-Digit Numbers with a calcul... 1629 | 2006-12-16 22:23:57 |
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19 | Subtraction of Three Digit Numbers 1527 | 2007-01-11 20:01:55 |
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20 | Subtracting Two-Digit Numbers with a calcul... 1472 | 2006-12-16 22:23:57 |
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