试题 试卷
题型:填空题 题类:常考题 难易度:普通
小数乘整数5697 10
7.2×13.7-4.7×7.2+7.2=
4.03×101={#blank#}1{#/blank#}
①0.25×2.8
=0.25×(4×0.7)
=0.25×4×0.7
=1×0.7
=0.7
(应用了{#blank#}1{#/blank#}定律)
②51.25×0.8
=(50+1.25)×0.8
=50×0.8+1.25×0.8
=40+1
=41
(应用了{#blank#}2{#/blank#}定律)
①7×(9.3﹣5.8)﹣3.5
②9×( - )×6
③4.79× +21%÷
④ ÷[( - )× ]
试题篮