用一张长100厘米，宽80厘米的长方形红纸，做一些直角边分别是5厘米和4厘米的三角形小旗，最多能做多少面？
直接写得数．×=×12=×=÷=÷= 9×=÷═÷12=
直接写得数．=== 3.2÷40%=====
直接写出得数．×=﹣= 0÷= 5÷= 70×=
计算 0.62=×= 4×60%= 0×=÷2= 10÷=×3.6= 0.875÷0.125=
找准对应．（12）
×
=
×12=
×
=
÷
=
÷
= 9×
=
÷
═
÷12=
=
=
=
=
=
=
=
×
=
﹣
= 0÷
=
= 70×
=
×
= 4×60%= 0×
=
÷2= 10÷
=
×3.6= 0.875÷0.125=
粤公网安备 44130202000953号