选择题-答案和讲解

2cmx2cmx5c
m=20cm3

10cmx10cmx
5cm=500cm3

425÷1000k 32.4kg+28.625kg+33.04kg=94.
g=0.425kg 065kg

94.065kg÷3=31.355kg
=31.355kg+0.425kg
= 31.78kg

= 160cm-8cm)÷2 6x60
=76cm =360

3x60=
180

5x60=
300

180+300=480x20%
=96

8cm+6cm+4cm+4cm=
10cm=32cm

100÷32=3 4
=3+ 4
=7

73

6
=x

= 5x5)cm x6 5x5x5)=125
=150cm2 x= 5