To subtract 98 lbs 12 oz from 105 lbs 8 oz, you need to borrow 1 pound from the 105 lbs to add to the ounces. This will make it 104 lbs 16 oz. Then, subtract 98 lbs 12 oz from 104 lbs 16 oz, which equals 6 lbs 4 oz. Therefore, 105 lbs 8 oz minus 98 lbs 12 oz is 6 lbs 4 oz.
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(105 lb 8 oz) - (98 lb 12 oz) = (104 lb + 1 lb 8 oz) - (98 lb 12 oz)
= 6 lb + (1 lb 8 oz) - (0 lb 12 oz)
= 6 lb + 24 oz - 12 oz
= 6 lb + 12 oz
It might be possible to work this in your head. Your 98 is 100 minus 2. This means 98 plus 98 is 100 plus 100 minus 2 minus 2. That's 200 minus 4 which gives 196 as the answer.
8.1667
8.1667
77, 84, 91, 98, 105, 112, 119.
7, 42, 63, 98, 105