①498+9870÷35
来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/05/12 06:00:51
①498+9870÷35
②420.5-294÷2.8×2.1
③(2/3-2/5)÷(1/8+5/12)
④2/3÷(3/4+1/12×4/5)
②420.5-294÷2.8×2.1
③(2/3-2/5)÷(1/8+5/12)
④2/3÷(3/4+1/12×4/5)
①498+9870÷35
=498+9870÷7÷5
=498+1410÷5
=498+282
=780
②420.5-294÷2.8×2.1
=420.5-294÷4×(2.1÷0.7)
=420.5-73.5×3
=420.5-220.5
=200
③(2/3-2/5)÷(1/8+5/12)
=4/15÷13/24
=32/65
④2/3÷(3/4+1/12×4/5)
=2/3÷(3/4+1/15)
=2/3÷49/60
=40/49
=498+9870÷7÷5
=498+1410÷5
=498+282
=780
②420.5-294÷2.8×2.1
=420.5-294÷4×(2.1÷0.7)
=420.5-73.5×3
=420.5-220.5
=200
③(2/3-2/5)÷(1/8+5/12)
=4/15÷13/24
=32/65
④2/3÷(3/4+1/12×4/5)
=2/3÷(3/4+1/15)
=2/3÷49/60
=40/49
467÷38×498=?
(498×381+382)÷(381×498+498-116)
(498×381+382)÷(381×498+498-116)写出过程!
简便运算:① 9.8÷14 ②(6.4+3.2)÷8 ③ 35÷(0.35×4) ④ 63.2×0.1+6.32×9
简便运算(498×381+382)÷(382×198-116)
二.计算下列各题①(-5)÷(-6)÷(-5分之6)②-48÷36×(-9分之1)③-7÷(35+9分之7)④3分之2×
简便运算.(2030-18×35÷35
630÷35÷2 简便计算
2772÷28+34965÷35.
490÷35简便计算,
630÷35 并验算
35×12+350÷70