1、整数加减法简便计算分类练习题一、利用加减法的带符号“搬家”进行简算:378+527+73 167+289+33 427+58-2758+39+42+61 427-89+73 136+57-36123+86-23 438+34+162 35+13+65+87183+256+117-156 367+278-267+123 239+233-139+67 867+234+133+166 258+232-158+168 135+147+165+153287+135+123+165 258+143-158+157 199+124+201+176285+633+115+67 742+129+158+171
2、368+139-168+261二、加减同级运算的添括号法则:218+39+61 218+138-38 286-23-77218+523-23 136-29-61 336-45-55272-36-64 786-38-48 618+147-47 318+52+48 418+143-43 172-65-35318+544-44 236-66-34 318+155-55372-23-77 686-29-61 518+88+12618+333-33 636-47-53 118+123-23772-56-44 886-43-57 318+41+59三、加减同级运算的去括号法则:576+(187+24)57
3、6+(187-76) 843-(543-179)347+(153-129)947+(372-447) 771-(89+71)576-(76+59) 576-(176-59)676-(155-24)272-(89+72)756-(456-279) 475-(76+75)375+(187+25) 476+(124-77) 647+(371-247)246+(153-146) 546+(153-146)544+(256-447)976-(71+76) 337-(137-59) 888-(188-24)576-(176+72)666-(466-279) 678-(78+75)四、变式练习:564-199 564+97 235+297218+299 218-199 286+199218+98 136-198 336-299272-199 780-101 619+102 318+103 418+198 171-102318+199 236-98 318+198372-103 686-197 518+103618+198 636-299 118+99