综合套题十
689 +42 =	19.2 × 100 =	60 - 4.92 =
54.9 + 77.2 =	6.14 × 1000 =	110 - 80 =
9.2 - 4.8 =	20 ×16 =	8.2 ÷ 100 =
9.1 + 9.06 =	9000 ÷ 50 =	60 ÷ 1000 =
2、简便计算
784 × 44 + 56 × 784	14 × 101	496 + 352 + 304 + 586 + 348
40000 ÷ (40 × 125 )	4 × (84 × 25 )	809 - 281 - 119
3、四则运算与灵活运用
999 × 339	701 + 526 - 525	750 ÷ 25
[(53+35)×7-289]×4	447 - 1512 ÷ (12 × 9)	56 × 240 ÷ 12
2.4 + 9.95 - 8.17	859×199-199×41-18×199	739 + 150 ÷ 3 × 9