综合套题十
5.2 ÷ 100 =	5.2 - 2.5 =	77.4 × 100 =
4.92 × 1000 =	6.5 + 7.14 =	950 - 80 =
125 ×16 =	200 ÷ 25 =	47.23 - 1.3 =
19.9 + 22.9 =	30 ÷ 1000 =	99 +554 =
2、简便计算
54000 ÷ (54 × 25 )	66 × 25 × 4	129 × 32 + 68 × 129
639 × 186 - 639 × 86	974 - (474 + 413 )	229 + 184 + 571 + 430 + 216
3、四则运算与灵活运用
832 - 257 + 258	( 375 + 440 ) ÷ 5	561 - 72 × 2 + 252
5921 - (121 + 431 )	3 + 3.84 - 2.81	998 × 246
799 - 192 - 599	5×[2×(64-45) +280]	910 ÷ 5 ÷ 14 + 239