1 小学四年级数学下册脱式计算题4 0 0 题 用脱式计算下面各题 1 4 2 -5 4 ÷9 +1 4 7 5 ×4 ×2 5 1 6 ×7 6 -7 6 ×6 7 2 0 ÷3 6 ÷2 9 9 ×5 3 +5 3 4 5 0 -2 ×(1 6+9 ) 2 4 5-(4 5 +3 9) 1 2 5×(8 ×4 )×5 4 1 ×2 5 -2 5 4 2 0 ÷(2 0 5-1 9 8)×4 4 6 0 ÷(2 9 -1 8 ÷3 ) (9 6 0-4 0 0)÷7 0 (1 4 0 -7 0 )×5 4 6 3 +8 4×2 ÷4 2 4 9 0 ÷7 +2 4×5 2 6 ×6 -1 1 0 1 5 ×7 +8 5 ×7 (4 6 -2 0 )×3 0 -9 0 (4 0 -4 )×2 5 2 4 0 0 ÷8 0 -1 4 ×2 1 0 8 -(8 3 +3 6 0÷6 0 ) (4 2 0+4 8)÷(3 7 5-3 4 5 ) 2 9 0 -(3 4×3 +9 9 ) 1 4 2 -5 4 ÷9 +1 4 2 16×76-76×6 99×53+53 450-2×(16+9) 245-(45+39) 125×(8×4)×5 41×25-25 420÷(205-198)×4 460÷(29-18÷3) (960-400)÷70 45+240÷12 124+78+22 100-35-25 (140-70)×54 63+84×2÷42 490÷7+24×5 26×6-110 (46-20)×30-90 15×7+85×7 (40-4)×25 2400÷80-14×2 108-(83+360÷60) (420+48)÷(375-345) 290-(34×3+99) 142-54÷9+14 3 16×76-76×6 99×53+53 450-2×(16+9) 245-(45