23.78*45.6-237.8*3.56-127.8
1个回答
23.78*45.6-237.8*3.56-127.8
=23.78*45.6-23.78*35.6-127.8
=23.78(45.6-35.6)-127.8
=237.8-127.8
=110
相关问题
12+23+34+45+56+67+78+89-(1+2+2+3+3+4+4+5+5+6+6+7+7+8+8+9)
12 +23 +34+ 45 +56+ 67 +78 +89/1.2+ 3.4 +4.5 +5.6+6.7+ 7.8 +
12.34+23.45+34.56+45.67+56.78.67.89+78.91+89.12+91.23=
23+45+89+12+56+78
计算:12.34+23.45+34.56+45.67+56.78+67.89+78.91+89.12+91.23.
计算:12.34+23.45+34.56+45.67+56.78+67.89+78.91+89.12+91.23.
计算:(1−12)×(2−23)×(3−34)×(4−45)×(5−56)×(6−67)×(7−78)×(8−89)×(
5+5+5+5+5+5+5+54+5+56+23+789+89+89+7+78+78+45+12+12+5++6+6+6
列竖式计算(前两题要验算).13.73+6.56=验算45-39.78=验算0.17+3.64=11.6-8.99=
① (-8)+(-9)= ② (-17)+21= ③ 45+(-23)= ④ (-45)+23=