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一、口算。
$44÷11=$
$82+28=$
$808÷8=$
$2×340=$
$64÷16=$
$23×50=$
$70×11=$
$408÷3=$
$44÷11=$
4
$720÷80=$9
$52÷26÷2=$1
$82+28=$
110
$110-90=$20
$52÷(26×2)=$1
$808÷8=$
101
$108×4=$432
$18×2×10=$360
$2×340=$
680
$960÷40=$24
$18×(2×10)=$360
$64÷16=$
4
$210×3=$630
$48÷8×2=$12
$23×50=$
1150
$360÷30=$12
$48÷(8÷2)=$12
$70×11=$
770
$780÷26=$30
$48÷6×5=$40
$408÷3=$
136
$39+42=$81
$48×5÷6=$40
答案
一、4 9 1 110 20 1 101 432 360 680 24 360 4 630 12 1150 12 12 770 30 40 136 81 40
二、计算下面各题。
$126-(434-14)÷6$ $(96-87)×(49+76)$ $(600+345)÷15×26$
$108÷(63-54)×80$ $(52+91)×5-67$ $285+(300-144)÷12$
$126-(434-14)÷6$ $(96-87)×(49+76)$ $(600+345)÷15×26$
$108÷(63-54)×80$ $(52+91)×5-67$ $285+(300-144)÷12$
答案
二、56 1125 1638 960 648 298
解析
126-(434-14)÷6
=126-420÷6
=126-70
=56
(96-87)×(49+76)
=9×125
=1125
(600+345)÷15×26
=945÷15×26
=63×26
=1638
108÷(63-54)×80
=108÷9×80
=12×80
=960
(52+91)×5-67
=143×5-67
=715-67
=648
285+(300-144)÷12
=285+156÷12
=285+13
=298
=126-420÷6
=126-70
=56
(96-87)×(49+76)
=9×125
=1125
(600+345)÷15×26
=945÷15×26
=63×26
=1638
108÷(63-54)×80
=108÷9×80
=12×80
=960
(52+91)×5-67
=143×5-67
=715-67
=648
285+(300-144)÷12
=285+156÷12
=285+13
=298
