综合套题十
800 ÷ 25 =	25 ×16 =	30 - 1.44 =
9.78 × 1000 =	84.8 + 59 =	810 - 60 =
58 +598 =	6.8 - 2.9 =	6.1 ÷ 1000 =
81.6 + 39.6 =	80 ÷ 10000 =	15.7 × 10 =
2、简便计算
832 × 842 + 158 × 832	42 × 4 × 25	27000 ÷ (27 × 25 )
544 × 134 - 34 × 544	417 + 416 + 156 + 283 + 344	864 - 131 - 169
3、四则运算与灵活运用
794 - 684 + 693	6×[348÷(64-58)+277]	9130 ÷ ( 913 ÷ 51 )
6.2 + 5.48 - 4.7	1284 ÷ 76 × 19	875 ÷ 25
484 + 156 ÷ 4 × 6	560 ÷ (5 × 7) + 430	688 - 242 - 288