101×87 19.92+14.4-9.92
330÷5÷2 5.17-1.8-3.2
72×125 (135-35×2)÷5
5.26+7+1.74 27.85-(7.85+3.9)
5.6+2.7-3.6 10-2.75-3.25
15.25-3.1+0.65-4.9