1.8时 =分 3元7分=元
5d m=m 117g=kg
6.16<.05 0.704<0.72 4.5>4.83
7.5 -4.3 =
2.18+6.72=
13.5-1.5=
0.47 +6=
9.6 -3.5 =
6.3+3.6=
0.95-0.32 =
2.4+7.3=
36.7+3.85= 12.64-6.48= 30-9.74=
9.34-2.85= 16.28 +23.2= 20.08+1.07 =
7元2角6分+11元4角3分 24m33cm+15m54cm 1kg80g+310g