问题
解答题
李欢同学练习跳远，前6次平均跳了3.2米，又跳了2次，前后8次平均跳了3.3米，最后两次平均跳了多少米？
答案
（8×3.3-6×3.2）÷2，
=7.2÷2，
=3.6（米）；
答：最后两次平均跳了3.6米．
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李欢同学练习跳远，前6次平均跳了3.2米，又跳了2次，前后8次平均跳了3.3米，最后两次平均跳了多少米？
（8×3.3-6×3.2）÷2，
=7.2÷2，
=3.6（米）；
答：最后两次平均跳了3.6米．
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