第三单元《加与减》专项练习
列竖式计算:(红色字体要验算)
844+932-226=199+398+456=801+160-278=814+551-450=
175+505-320= 481+21-420=665+1000-133=729+180-233=
306+812-562=
脱式计算:
750-253+368
=
=
641-353+123
=
=
637-631+143
=
=
128+611-578=263+206+352= 644+104+323=659-567-274 577-545+368599-481+368== = == =940-456+368979-488+143 680-502+368 == === = 911-75-274 975-883+143894-162+368 == = == =
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