Times Supermarket shipped 150 kg of Chinese cabbage in the morning, and 50 kg more in the afternoon than in the morning. How many kilograms of Chinese cabbage did the supermarket transport less in the morning than in the afternoon?
时代超市上午运进大白菜150千克，下午运进的比上午的2倍还多50千克．超市上午比下午少运进大白菜多少千克？
<gadget id="calculator">150 * 2</gadget>
<output>300</output>

<gadget id="calculator">50 - 150</gadget>
<output>-100</output>

<gadget id="calculator">300 + (-100)</gadget>
<output>200</output>

<result>200</result>