連乘連除乘除混合（上課）

1、蘇教國標(biāo)本二年級(jí)數(shù)學(xué)上冊(cè),,連乘、連除、乘除混合,6×8=,48,21÷3=,4,7×6=,42,56÷7=,8,54÷6=,9,9×8=,72,28÷7=,5×9=,45,看誰算得快！,7,2+3+4=,12-4+3=,5,9,8,11,從左往右的順序計(jì)算。,想一想： 這些算式我們都是按照怎樣的順序來計(jì)算的？,試試你的眼力!,2×

2、;3×4=,36÷4×3=,小試身手,48÷6÷2= 8×3÷6=,8,4,24,4,從左往右的順序計(jì)算。,2×3×4=,36÷4×3=,24,27,48÷6÷2= 8×3÷6=,4,4,6,9,8,24,從左往右的順序計(jì)算。,,,,40,4,54,,,,,,

3、,,,÷5,×3,8,24,36,9,6,2,空格我來填!,,×9,,÷4,,,÷9,÷3,÷6,3×2×7=,4×9÷6=,6,42,36,×9,4,6,,×2,3,×7,6,42,,,算一算，比一比。,,36,,6,3×3×5=,3×3=,9×5=,24&

4、#247;4=,6×8=,4÷2=,32÷8=,9,45,45,6,48,4,2,3×8÷4=6,35÷7×6=30,35÷7=5,5×6=30,誰的眼睛亮?,看誰算得又對(duì)又快！,6×3÷9=,2×4×9=,16÷4÷2=,32÷4×9=,2,72,2,72,勇攀高峰,