Subtracting Decimals | MathHelp.com - By MathHelp.com
| 00:0-1 | to subtract 9.514 minus 1.6 . 1st line up the | |
| 00:06 | decimals So we have 9.514 -1.6 . Before we subtract | |
| 00:18 | , however , notice that 1.6 has no digits in | |
| 00:21 | the hundreds or thousands place , so we can use | |
| 00:25 | zero to fill these positions . Now we simply subtract | |
| 00:29 | the numbers by column , starting on the right . | |
| 00:32 | 4 0 is four is , one minus zero is | |
| 00:36 | one . But notice that we can't subtract 6/10 from | |
| 00:40 | 5/10 so we borrow one from the units column to | |
| 00:44 | get eight units and 15 10th . Now we subtract | |
| 00:49 | 15 -6 to get nine and 8 -1 is seven | |
| 00:56 | . Finally we bring down the decimal point , So | |
| 01:02 | 9.514 -1.6 is 7.914 . |
DESCRIPTION:
This lesson covers customary unit conversions. Students learn the following customary units of measurement: inch, foot, ounce, ton, fluid ounce, pint, gallon, yard, pound, cup, quart, and so on. Students also learn to convert from one customary unit of measurement to another using the following conversion factors: 60 seconds = 1 minute, 7 days = 1 week, 3 feet = 1 yard, 16 ounces = 1 pound, 4 quarts = 1 gallon, and so on. Students are then asked to solve problems using conversion factors, such as 18 feet = ____ inches.
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