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千米=米 3t50kg=t=kg
9元5角=元 350厘米=米
10.99 2.352.53 4.04 10.0110.10
6米5厘米6.5米 30分 3时 5.8吨 5吨800千克
3.4-1.8= 7.3+2.7= 10.2-5= 3-1.3-1.7 =
2.5×5= 0.8×4= 0.08×100= 1.2×50 =
①12.39+8.25=
②15-10.26=
③12.3+6.25 =
④3.04×6.9=
⑤0.25×0.64=
⑥0.87×5.4 =