A.444×25=444×5×5 |
B.444×25=400×25+40×25+4×25 |
C.444×25=4×25×111 |
D.444×25=444×20+444×5 |
A.老师直接告诉结论,我们应用结论解决问题 |
B.提供素材—初步发现—举例验证—总结规律 |
C.提供素材—举例验证—初步发现—总结规律 |
A.37-25×4 | B.37×25×4 | C.37×4-25×4 |
A.(1008÷14)÷(56÷14) | B.(1008×0)÷(56×0) |
C.10.08÷0.56 | D.504÷28 |
A.32×100-1 | B.32×(100-1) | C.32×(99+1) |