Question

急！求一道数学题！999*7.78+333*6.66的简算方法！

在线等答案！

Answer 1

999*7.78+333*6.66
=999*7.78+333*3*2.22
=999*7.78+999*2.22
=999*(7.78+2.22)
=999*10
=9990

Answer 2

原式=999*7.78+999*2.22=999*（7.78+2.22）=9990

Answer 3

999*7.78+333*6.66的简算方法！
=999x7.78+999x2.22
=999x(7.78+2.22)
=999x10
=9990

Answer 4

解：999*7.78+333*6.66
=333*3*（778+222）
=999*1000
=999000

Answer 5

9998×7.78＋333×6.66
=(10000-2)×(8-0.22)+(1000-1)×(2+0..22)
=80000-16+2200+0.44+2000+220-2-0.22
=84420-18+0.22
=84402.22

Answer 6

=999*7.78+333*（3*2.22）=999*7.78+999*2.22=999*（7.78+2.22）=9990