两个因数相乘的积一定比第一个因数(零除外)大

①4.3×2{#blank#}1{#/blank#}4.3+4.3        0.6×3{#blank#}2{#/blank#}0.6×2          0.4+3{#blank#}3{#/blank#}0.4×3

②1.2+1.2{#blank#}4{#/blank#}1.2×3        6×0.1{#blank#}5{#/blank#}0.1×6          7.5+15{#blank#}6{#/blank#}7.5×4

1.2×5=     3.5÷0.5=     0.56÷0.8=    0.25×8=

7.3÷0.1=    4.2+0.7=     4.8÷1.2=    9.6-0.6=

20×30                           0.2×0.3                            

=(2×10)×(3×10)      =(2×0.1)×(3×0.1)

=(2×3)×(10×10)     =(2×3)×(0.1×0.1)

=6×100                 =6×0.01

=600                     =0.06