综合套题十
7.3 - 6.7 =	8 ×25 =	300 ÷ 25 =
13 +198 =	73.5 + 75 =	2.8 ÷ 1000 =
34.8 × 100 =	2.82 × 1000 =	630 - 70 =
77.4 + 15.8 =	50 - 9.63 =	30 ÷ 10000 =
2、简便计算
957 × 439 + 957 × 561	168 + 236 + 551 + 132 + 149	204 × 133 - 33 × 204
21 × 8 × 125	759 - 266 - 134	4000 ÷ 4 ÷ 25
3、四则运算与灵活运用
7.06 + 5.68 - 2.7	767 - 198 - 267	[(105+91)÷7+261]×2
180 ÷ 18	933 - ( 333 - 798 )	950 ÷ 25
42 ÷ (3 × 7) + 448	280 ÷ 40 × 20	777 + 28 × 7 - 175