暑假四升五衔接专项复习题——《口算与估算》班级：_________姓名：__________1．直接写得数。                                          2．直接写得数。7.8＋4.5＝            2.4－0.5＝            6＋0.4＝            125×8＝480÷16＝            20－0.25＝          2.8－0.39＝        805－499＝5.64×1000＝        2.04＋1.5＝        4.6＋2＝            0.8＋0.4＝3．直接写出得数。2.3＋5.6＝            7.7＋2.5＝     2.5＋9.7＝        12.5＋12.5＝8.72＋6.28＝       10＋52＝        5.6－3.4＝        5.9－2.9＝4．直接写出得数。                                                            5．直接写出得数。2×5＝            4.2÷10＝          12.5÷10＝            3.54×10＝         52＋8＝               2.15×100＝           0.25×1000＝          2÷100＝         9÷10＝              70×50＝6．直接写出得数。25×8＝                 500＋20＝                  36－0×5＝               46－25＋17＝630÷9＝               25×9×4＝                 56＋7×5＝               28÷（4×7）＝410－23＝             24－8＋10＝               28÷4×7＝               46－（29＋17）＝7．直接写出答案。185＋715＝       1000－162＝       880＋22＝        10×2÷10×2＝32×25＝            93－3＝            32＋68＝          1.41×1000＝8．直接写出得数。23.8÷100＝               8.5×100＝             24×5＝                    56×78×0＝0.29÷10＝                 190×3＝                 58.2÷100＝             37＋68×0＝9．直接写出得数。32×98＝                   1.06÷10＝                  45÷（12－9）＝                 0÷6＋24＝72－72÷72＝              （25＋75）×8＝         1.8×10÷100＝          25×4÷25×4＝10．直接写出得数。507－217＝       500÷25÷2＝        55－55÷5＝          13÷100＝       125×80＝52×5＝            283＋227＝            96－6×7＝            1.2×10＝        56×30＝11．直接写出得数。                                                                                                       12．直接写出得数。4＋4÷4＋4＝             99×10÷99×10＝               15×30＝                  18＋150÷6＝12.6×1000＝             2.03÷10＝                           28÷4×7＝               356÷10000＝13．直接写出得数。                                                                                          14．直接写出得数。8×5÷8×5＝        25×9×4＝          141－77－23＝     32＋68×0＝       0×250÷5＝45÷（3×5）＝       0.78×100＝        4.56÷10＝          3.2÷1000＝       0.68×1000＝15．直接写出得数。                                                                                                                      16．口算。37×5×2＝             12×25＝            394×12×0＋4＝             37＋63＝       2.3×100＝             45÷100＝            4＋4÷4＋4＝                 28×100÷10＝17．直接写出下面各题的得数。70＋630＝               1200－280＝             26×3＝                       810÷90＝          1262－600＝            920×0＝                  916－25－75＝             563＋79－163＝       0÷387＝                 4800÷80＝             （32＋168）×4＝            618－25×8＝38×49≈                 198×6≈                    542÷59≈                    488÷71≈18．直接写出得数。                                  19．直接写出得数。                                                                                                          20．直接写出下面各题的结果。                                                                                                                                                                                           21．口算。54÷10＝                    4×250＝                    630÷9＝                    320×20＝12×60＝                    20×50＝                    70×40＝                    8×125＝22．直接写得数。0×12＝               25×7×4＝                  0÷2020＝          25×8÷25×8＝0.8×100＝          156＋49－56＝             52÷100＝          625－100×3＝23．直接写出得数。                                                                                                                                                                                                    24．直接写出得数。                                                                              25．直接写出得数。60＋700＝               72×5＝               420÷7＝                 36×100＝800－600＝             125×8＝             25×5×2＝             360－134－26＝26．直接写得数。                                                                                                        参考答案：1．8.4；2.7；10；10；90；6.1；2.8；0.305；2．12.3；1.9；6.4；1000；30；19.75；2.41；306；5640；3.54；6.6；1.23．7.9；10.2；12.2；2515；62；2.2；34．120；130；39；0.065；20；25；54；0；5．10；0.42；1.25；35.4；60；215；250；0.02；0.9；3500；6．200；520；36；3870；900；91；1387；26；49；07．900；838；902；4800；90；100；14108．0.238；850；120；00.029；570；0.582；379．3136；0.106；15；2471；800；0.18；1610．290；10；44；0.13；10000260；510；54；12；168011．45；2700；504；314；0.023；10；3500；10；200；1112．9；100；450；4312600；0.203；49；0.035613．0.01；32；8；37；0.0521；69；43；1810014．25；900；41；32；03；78；0.456；0.0032；68015．283；0；700；28；600；3；370；1016．370；300；4；100；230；0.45；9；280；17．700；920；78；9；662；0；816；479；0；60；800；418；2000；1200；9；7；18．1000；720；5020；730.304；800；1600；1019．0；600；120；3236；5.5；0.0375；1620．1.5；3.6；2.13；68；3.88；5.96；10.9；64；9.75；25；30；19621．5.4；1000；70；6400；720；1000；2800；1000；22．0；700；0；6480；149；0.52；32523．36；460；0；27；0.035；0；0.15；0.0046；364；64；0；60024．513；874；40；800；100000；24；90；625．760；360；60；3600200；1000；250；20026．100；38；0；40；0.5；100；0；180；200；2.83