脱式计算(27+53)×7 560+56×2 28×(46﹣37)21+13×3 354﹣78+122 16×7×9.
(1)果汁的单价比酱油贵多少元?(2)买1块面包和1瓶果汁,一共需要多少元?妈妈付出20元,应找回多少元?
小刚跳远成绩是2.54米,比小虎少0.15米,小虎跳远成绩是多少米?
用竖式计算.2.5+2.7= 41×24= 6.1﹣5.6=29×53= 37×51= 25×36=
7.28﹣(0.8+3.28) 3.15+1.83+6.85+2.17 5.3+0.98+2.72.72﹣3.98+5.28﹣2.02 10.78﹣1.54﹣2.46 8.44﹣(5.44+2.8)
1+0.25= 0.5×2.69×0.2=7.3+0.6+0.03= 5.36+4.4=7.5+2.5÷4= 2.78﹣5.46+5.22=