综合套题十
5.13 × 1000 =	25.3 × 100 =	340 - 60 =
72.8 + 4.4 =	30 ÷ 10000 =	300 ÷ 25 =
4 ×25 =	389 +23 =	6.8 ÷ 100 =
20 - 8.13 =	89.4 + 68 =	8.1 - 3.9 =
2、简便计算
9.58 + 1.64 + 6.94 + 7.36 + 1.06	64 × 25 × 4	99 × 257 + 257
878 - (414 + 278 )	( 900 + 4 ) × 25	22000 ÷ (25 × 22 )
3、四则运算与灵活运用
606 - 41 × 4 + 196	76 × 240 ÷ 12	5.8 + 7.3 - 6.7
64300 ÷ ( 643 ÷ 68 )	724 - ( 124 - 216 )	5193 - 618 - 493 - 182
492 - 4446 ÷ 19 ÷ 18	405 ÷ 45	[(35+70)÷7+251]×2