5.8+4.2×0.4 125.4-99+73.6 12.5×0.25×32
①18.2+10×(0.96+1.04)
②6.21÷1.25÷0.8
③4.86×9.6+0.486×4
④1.3+2.9+8.7+13.31
⑤25×1.02
⑥21÷3.5+21÷1.5
①15.74-4.3-5.7+4.26
②7.6×4.3+0.43×23+0.43
③8.88×1250
④40.9÷0.25
⑤0.25×(4-0.8)×1.25
⑥3.72-0.72×[0.1÷(15.9-15.85)]