小学数学三位数加减法练习175 + 157 = 645 + 239 = 708 + 213 = 256 + 775 = 607 + 314 = 352 + 608 = 166 + 792 =970 - 602 =343 + 701 =916 - 861 =806 - 487 =691 - 400 =106 + 537 =353 + 439 =328 + 114 =810 - 125 =648 - 585 =398 - 148 =716 - 117 = 704 + 124 = 449 - 312 = 713 - 288 = 202 - 155 = 954 - 286 = 802 - 668 =860 - 162 =287 + 167 =859 - 371 =941 - 343 =472 - 425 =900 - 168 =300 - 186 =900 - 554 =801- 205 =750 - 666 =300 - 122 =950 - 353 = 501 + 162 = 903 - 7
