一个量筒里有2升水，放入一个长0.8分米，宽0.9分米的长方体铁块（水把铁块全部淹没）水上升到2.9升的刻度处，这个长方体铁块的高是多少分米？
直接写得数．= = = 10×= == = = = 4××=
×= ÷= 14×= ×÷3=×2= ÷4= ÷= ×=÷= ÷= ×= ÷=×= 10÷= ×8= ÷=×= ×=
直接写出得数．﹣= ×= ÷=×= 1﹣35%= ×÷×=
看谁算得快!×= 6÷= 122=8×3.14= ÷= 75×4×2.5%=
直接写出得数．×8= ÷2= ÷= ×=﹣= 6.8÷10%= ×= 1÷=÷60%= ×15= 4.5+= ×=
= 
= 
= 10×
= 
=
= 
= 
= 
= 4×
×
=
×
= 
= 14×
= 
×
÷3=
×2= 
÷4= 
÷
= 
×
=
= 
÷
= 
×
= 
=
×
= 10÷
= 
×8= 
÷
=
×
×
﹣
= 
×
= 
÷
=
×
= 1﹣35%= 
×
=
×
= 6÷
= 122=
÷
= 75×4×2.5%=
×8= 
÷2= 
÷
= 
×
=
﹣
= 6.8÷10%= 
×
= 1÷
=
÷60%= 
= 
×
=
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