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1. 在()里填上合适的数。(每空1★)
1.8dm= ()cm 5.8cm= ()dm 3.6cm= ()mm
$0.3m^2= ()cm^2 2.9dm^2= ()cm^2 3.4m^2= ()dm^2$
$0.04m^3= ()dm^3 6.5dm^3= ()cm^3 2500dm^3= ()m^3$
$()cm^2= 7.2dm^2 ()cm^3= 5.62dm^3 ()dm^3= 9.05m^3$
$750cm^3= ()dm^3 0.2dm^3= ()cm^3 15dm^3= ()m^3$
1.8dm= ()cm 5.8cm= ()dm 3.6cm= ()mm
$0.3m^2= ()cm^2 2.9dm^2= ()cm^2 3.4m^2= ()dm^2$
$0.04m^3= ()dm^3 6.5dm^3= ()cm^3 2500dm^3= ()m^3$
$()cm^2= 7.2dm^2 ()cm^3= 5.62dm^3 ()dm^3= 9.05m^3$
$750cm^3= ()dm^3 0.2dm^3= ()cm^3 15dm^3= ()m^3$
答案
18 0.58 36
3000 290 340
40 6500 2.5
720 5620 9050
0.75 200 0.015
3000 290 340
40 6500 2.5
720 5620 9050
0.75 200 0.015
2. 计算下面各图形的体积。(单位:m)(每题5★)
答案
(1) $ 15 × 10 × 8 = 1200 ( m ^ { 3 } ) $
(2) $ 64 × 8 = 512 ( m ^ { 3 } ) $
(3) $ 3 × 3 × 3 + 10 × 5 × 6 = 327 ( m ^ { 3 } ) $
(4) $ 5 × 5 × 5 - 3 × 3 × 3 = 98 ( m ^ { 3 } ) $
(2) $ 64 × 8 = 512 ( m ^ { 3 } ) $
(3) $ 3 × 3 × 3 + 10 × 5 × 6 = 327 ( m ^ { 3 } ) $
(4) $ 5 × 5 × 5 - 3 × 3 × 3 = 98 ( m ^ { 3 } ) $
