My boys spend hours adding and subtracting muscles, a respiratory system, nerve endings, epidermis, etc.
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Adding and subtracting were painfully difficult for me, and I was not able to learn the multiplication tables.
The point of layering is to be constantly vigilant of how you're feeling, and adding and subtracting articles of clothing as necessary.
These breakeven points are arrived at by adding and subtracting the price paid for the long straddle to and from the strike price.
And nearly one in three five-year-olds were not yet beginning to use the vocabulary involved in adding and subtracting, for example "add", "take away" and "how many".
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Three strands of DNA were synthesized so that when they were put into a test tube, they immediately became a molecular motor--a pair of DNA tweezers, held together at one end by a third piece of DNA that could be made to open and shut by adding or subtracting a fourth DNA strand.
Commercials raised their net short by adding gross shorts and subtracting gross longs.
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But it turns out that pilots can run the engine better by adding some air and subtracting some gas in the fuel mixture.
The federal government has created dozens, even scores, of health care, education, transportation, housing, job training, and welfare programs: Washington should start subtracting rather than adding duplicative and ineffective programs.
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Here's a different kind of reform, one that works not by adding to the statute books but by subtracting from them.
Managed money accounts piled back into gold, adding 15, 090 gross longs versus subtracting 6, 011 gross shorts, raising the net-long position to 98, 426 contracts, the biggest position since May 1.
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Non-commercial traders similarly cut their net-long position in the legacy report by subtracting 8, 989 gross longs and adding 453 gross shorts, which dropped their net-long position to 221, 852 contracts.
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Modern economists have raised similar concerns about today's redistributive welfare states: by subtracting from the rewards of work and adding to the consolations of idleness, social transfers sap economies of their vigour.
Managed-money accounts lowered their net-long position to 149, 256 contracts by subtracting 21, 697 gross longs and adding 679 gross shorts, returning their net-long position back to levels similarly seen at the beginning of the month.
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