①0.25×0.58×40
②17.8×99
③6.28×7.5+6.28×2.5
①6.17×3.6+6.17×6.4
②0.25×0.39×4
③4.7×102-47×0.2
④9.07-8.5+3.4
⑤15.6+18.9÷1.4
⑥3.79+0.125÷0.8
2.5×7.1×4
16.12×99+16.12
26×15.7+15.7×24
(2.275+0.725)×0.28
9.6×25
3.6×4.9+0.36×51
1.2×0.3= ﹣= 32÷53×0=
0.25÷= 1﹣0.09= +20%=