四年级数学简便计算题及答案.pdf

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1、四年级数学简便计算题及答案四年级数学简便计算题及答案基础题：基础题：1 1）125125（1717 8 8）4 2 4 2）375375 480+6250 480+6250 48483 3）2525 16 16 125 4125 4）1313 99 995 5）7500075000 125 125 15 6 15 67 7）150150 40 40 50 8 50 89 9）210210 42 42 6 10 6 10 11 11）6767 21 21 1818 21+85 21+85 79 12 79 1219191313）347+358+352+349347+358+352+349）790

2、07900 4 4 25 25）56005600（2525 7 7）3960039600 25 25）321321 81+321 81+321 四年级数学简便计算题及答案四年级数学简便计算题及答案:1 1）125125（1717 8 8）4 2 4 24848 =125 =1258 84 417 =48017 =480=100068=100068 =68000 =680003 3）2525 16 16 125 4125 4 =25 =252 28 8125 =13125 =13 =50000 =1300 =50000 =1300 =1287 =12875 5）7500075000 125 12

3、5 15 6 15 6=75100012515=75100012515=75151000125 =79=75151000125 =79=58=58 =40 =407 7）150150 40 40 50 8 50 8=1505040 =56100257=1505040 =56100257=340 =56710025=340 =56710025 =120 =32 =120 =329 9）210210 42 42 6 10 6 10=210766=210766=30 =3964=30 =3964 =1584 =15841111）6767 21 21 1818 21+85 21+85 79 12 79

4、 12=21(67+18)+8579 =321(81+19)=21(67+18)+8579 =321(81+19)=2185+8579 =32100=2185+8579 =32100=85(21+79)=85(21+79)=8500 =8500）375375 480+6250 480+6250(375(375625)625)=480000 =480000）1313 99 99(100(1001)1)1313）79007900 4 4 25 25=7900(425)=7900(425)）56005600（2525 7 7）3960039600 25 25=39610025=39610025）32

5、1321 81+321 81+321 19 191313）222222222222 999999 14 999999 14）333333333333 333333 333333 =222222 =222222(1000000(10000001)=1111111)=111111999999999999 =0000 =0000222222 =111111222222 =111111(1000000(10000001)1)=7778 =7778 =111111111111 =1515）5600056000 （1400014000 16 16）16 16）654321654321 909090+654

6、321 909090+654321 9090990909=560001400016 =654321999999=560001400016 =654321999999=4=416 =65432116 =654321(100000(1000001)1)=64 =0000 =64 =0000 =5679 =56791717）3434 3535 3535 3535 3434 18 3434 18 =34 =34353510110135353434101 =27101 =27 =0 =0 =216 =2161919）345345345345 15015 20 15015 20 =345 =3451001

7、1001(15(151001)=3501001)=350=3451510011001=3451510011001 =1400+6 =1400+6 =23 =1406 =23 =14062121）7575 45+17 45+17 25 22)599996+49997+3998+407+89 25 22)599996+49997+3998+407+89=25=253 345+1745+1725 =600000+50000+400025 =600000+50000+4000=25(135+17)=25(135+17)=65400+487 =65400+487=25152=25152 =65887 =65887=25438=25438=3800=38002323）（4848 75 75 8181）（）（2424 25 25 27 27）=48 =48 75 75 8181242425252727=482475258127=482475258127=233=233 =18 =18654321654321）2700027000 125 12510001000125125=278=278）347347+358358+352352+3493494 43+8+23+8+21 14 43 32+407+892+407+89