课件13张PPT。练习二数一数与乘法33333369181个32个33个36个34444444205205205+5+5+5+5=255x5=253x8=243+3+3+3+3+3+3+3+3+3=245个58个33515531564249218832473215个33个59个23个74个63个86、画一画,数一数3×4= 5×6=12304个36个53515个5315个5个33个5一共有多少根香蕉?香蕉有2个5.5× 2 = 10(根)一共有多少个胡萝卜?胡萝卜有4个4.4× 4 = 16(个)63422× 6 = 124× 6 = 241× 6 = 63× 6 = 188× 5 = 408× 5 = 405× 2 = 10(元)3× 5 = 15(元)2× 3 = 6(元)6+ 4= 10(元)