综合套题十
80 ÷ 1000 = 32 ×25 = 6.5 ÷ 100 =
450 - 70 = 8000 ÷ 50 = 21.5 × 10 =
22 +199 = 71.7 + 81.9 = 5.5 - 3.8 =
80 - 7.39 = 8.72 × 1000 = 8.4 + 2.16 =
2、简便计算
99 × 161 + 161




664 - 142 - 158




18 × 1009




52 × 125 × 8




8000 ÷ 8 ÷ 125




321 + 164 + 279 + 393 + 236




3、四则运算与灵活运用
(83 × 3 + 989) × 7




7.05 - 5.2 + 6.88




25 × 64




262 ÷ 50 × 25




98 × 521




665 ÷ 19 ÷ 5 + 426




5×[(175-49)÷9+190]




125 × 56 × 25




603 - ( 403 - 473 )