Possible answer: I can draw a number line with the first arrow pointing left from 0 to 4, then draw an arrow 8 units to the left from 4 to 24. The arrow ends at 24, so the sum is 24. Possible answer: I can use 4 positive chips and 8 negative chips. I can group zero pairs, then count the remaining chips. There are 4 negative chips Live statistics and coronavirus news tracking the number of confirmed cases, recovered patients, tests, and death toll due to the COVID-19 coronavirus from Wuhan, China. Coronavirus counter with new cases, deaths, and number of tests per 1 Million population. Historical data and info. Daily charts...