,第 4 课时 练习六,第 六 单元 两、三位数的加法和减法,1.55+32= 55-32= 55+35=55+38= 55-38= 90-35=,87,23,90,93,17,55,2.先口算上下两个数的和,再口算它们的差。,3.先说说哪几题得数比50小,再口算。,32+19= 87-35= 90-34=23+19= 78-35= 90-43=,51,52,56,42,43,47,4.,68,31,90,46,17,23,77,18,51,83,5.一辆汽车上有乘客35人,到卫星广场下车15人,上车11人。离开广场时车上还有乘客多少人?,6.小英看一本72页的故事书。第一天看了26页,第二天看了28页,再看多少也才能看完?,15,150,1500,8,80,800,900,1100,1400,200,600,800,40,1700,40,130,90,140,200,900,1100,160,110,80,60,60,55,120,70,15,30,90,5,90,99,85,140,74,26,34,25,60,42,52,71,81,150,11,55,90,