①3.63-1.25+17.37-0.75 ②67.7-6.3+3.7 ③4600÷25÷4④9.54-(3.54+2.62) ⑤96×37+37×3+37 ⑥11×56+121×4
27.3+73.2+72.7 43.25- 10.4-3.25
5.85-(1.89+1.85) 14.37-(7.42-4.37)
64.3-18.75+15.7-11.25