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1 直接写出得数。(每题1分,共20分)
$48 + 34 = $ $789 - 456 = $ $856 + 44 = $ $345×7 = $
$345×30 = $ $210÷7 = $ $76 - 25 = $ $321 + 543 = $
$526 - 33 = $ $567×6 = $ $456×40 = $ $648÷6 = $
$218 - 25×4 = $ $200÷10 + 120 = $ $39÷39×39 = $ $37×(27 - 17) = $
$75÷25×60 = $ $()÷8 + 5 = 11$ $()×4 - 4 = 16$ $30 + 240÷120 = $
$48 + 34 = $ $789 - 456 = $ $856 + 44 = $ $345×7 = $
$345×30 = $ $210÷7 = $ $76 - 25 = $ $321 + 543 = $
$526 - 33 = $ $567×6 = $ $456×40 = $ $648÷6 = $
$218 - 25×4 = $ $200÷10 + 120 = $ $39÷39×39 = $ $37×(27 - 17) = $
$75÷25×60 = $ $()÷8 + 5 = 11$ $()×4 - 4 = 16$ $30 + 240÷120 = $
答案
82 333 900 2415
10350 30 51 864
493 3402 18240 108
118 140 39 370
180 48 5 32
10350 30 51 864
493 3402 18240 108
118 140 39 370
180 48 5 32
2 列竖式计算,带※的要验算。(每题3分,共12分)
$1708 + 482 = $ $5029 - 2874 = $ $215×37 = $ $※448÷16 = $
$1708 + 482 = $ $5029 - 2874 = $ $215×37 = $ $※448÷16 = $
答案
竖式及验算略
2190 2155 7955 28
2190 2155 7955 28
3 脱式计算。(每题3分,共18分)
$390÷(90 - 12×7)$ $(480 + 60)÷(12×9)$ $24×[12÷(4 - 2)]$
$218 + 324÷18×5$ $(72 + 136)÷(96÷12)$ $940×[128 - (154 - 31)]$
$390÷(90 - 12×7)$ $(480 + 60)÷(12×9)$ $24×[12÷(4 - 2)]$
$218 + 324÷18×5$ $(72 + 136)÷(96÷12)$ $940×[128 - (154 - 31)]$
答案
65 5 144
308 26 4700
308 26 4700
