综合套题十
13.45 - 6.6 =	14 ×60 =	71.8 × 100 =
4000 ÷ 50 =	1.55 × 1000 =	249 +58 =
83.9 + 47 =	6.5 - 1.7 =	10 ÷ 10000 =
320 - 50 =	20.4 + 81.8 =	3.9 ÷ 1000 =
2、简便计算
( 30 + 8 ) × 125	49 × 4 × 25	396 × 101 - 396
538 - 168 - 232	97000 ÷ (25 × 97 )	128 + 167 + 172 + 791 + 333
3、四则运算与灵活运用
5.11 + 4.3 - 4.5	2600 ÷ 200	225 ÷ (5 × 15) + 475
4×[(133-49)÷4+371]	25 × 52	84 × 25
769×329-329×3-66×329	(81 × 9 - 110) × 9	25 × 60 × 125