求60道口算题小学数学四年级上册人教版

  90 180=                  12×30=                       600÷20=              630÷30=                8×125=25×40=                     9×15=                          74×3=                  36÷3=                450÷15=600÷100=            200 500=                     3600÷12=               300÷5=                     12×7=   2100×3=                300×40=                      600×500=             1200÷8=                    76÷8=450×4=                 9600÷80=                        340×5=              560-340=                  560÷14=234-24=                   345-300=                   3400-3000=               45÷6=                     400÷400=1205÷4≈               21×89≈                   3649÷61≈               1025÷51≈               39×203≈31×30=                   43×30=                      50×800=                  3000÷50=               89×312≈50÷10=                    130×3=                      360÷40=                     60×50=                150÷3=   15×80=                     15×6=                      70÷14=                      300×6=                120÷60= 28×3=                     15×8=                       420÷3=                        106×5=                  6×130=48÷3=                    130×5=                      650÷5=                        1900×5=                    400÷8=  答案是；270                       360                   30               21              10001000                    135                   222            12                   306                          700                   300            60                   846300                  12000              300000           150                9。
  。。。。。41800                  120                  1700              220                40210                    45                       400           7。
  。。。。。
  3              1300               1800或1890            60                20                   8000930                 1290                    40000            60                    270005                       390                      9                3000                  50 1200                 90                         5                1800                 284                    120                        140              530                 78016                      650                    130              9500                 50。