8乘7乘12,5 6.6乘12加88乘6.6 20乘(3.52除以2.2减0.2) 15分之2除以[1减(5分之1加3分之1)]
8乘7乘12,5 6.6乘12加88乘6.6 20乘(3.52除以2.2减0.2) 15分之2除以[1减(5分之1加3分之1)]~
=7×125×8
=7×1000
=7000.
6.6×12+88×6.6
=6.6×(12+88)
=12×100
=1200.
8×7×12.5
=(8×12.5)×7
=100×7
=700
6.6×12+88×6.6
=6.6×(12+88)
=6.6×100
=660
20×(3.52÷2.2-0.2)
=20×(1.6-0.2)
=20×1.4
=28
2/15÷[1-(1/5+1/3)]
=2/15÷[1-8/15]
=2/15÷7/15
=2/7
图
=7×125×8
=7×1000
=7000.
6.6×12+88×6.6
=6.6×(12+88)
=12×100
=1200.