计算+++…+.
列式计算.(1)8.7元比12元少多少?(2)两个加数都是6.9,和是多少?
用竖式计算. 100﹣31.6= 4.9+11.8= 6.1﹣5.8= 14.9﹣9.9=
用竖式计算. 7.4+12.86= 20﹣5.674= 141.2﹣48.98=102+4.36= 32.15﹣27.45=验算: 12.9+5.01=验算:
竖式计算:5.32+14.89= ;7.68﹣5.99= ;50﹣18.43= .
竖式计算 (1)324×4= (2)312÷6= (3)816÷4= (4)805×7= (5)518×3=(6)10﹣3.2= (6b)714÷6= (7)3.25+2.41= (b7)132×7= (8)66.7﹣36.4=(8b)663÷6= (9)38×92= (9b)123×8= (10)91×19= (10b)372÷7=