小學(xué)四年級數(shù)學(xué)簡便計(jì)算題

1、1 / 13 簡便計(jì)算分類練習(xí)題第一種(300+6)x12 25x(4+8)125x(35+8) (12+24+80)50 32(25+125) 25 24+16 4(2565+2528) (13+24)x8 第二種84x101504x2578x10225x204 70425 88125 10276 10187第三種99x6499x16638x99999x99 98199 5898 99 x27 98 x34第四種99x13+1325+199x2532x16+14x3217899+1782 / 13 7942+79+79 578436+6484 7599+2757527+192 5 31 87

2、0+13310 78x4+78x3+78x3 第五種88x12572x125 75241225125x32x825x32x125 50(344)3 138254 (13 125)(38) 第六種360025481004753000125812502557300 254 39003925 42057 800208第七種1200-624-76 2100-728-772273-73-27847-527-273 3 / 13 50012471021232 23561356721 12351780166530657381065 2357183317357 23651086214 第八種278+463+2

3、2+37732+580+268425+14+186 158+262+138 1034+780320+102375+219+381+225 2214+638+286 181+2564+2719 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 第九種214-86+14787-87-29365-65+118455-155+230第十種576-285+85825-657+57690-177+77755-287+87 4 / 13 第十一種871-299157-99

4、363-199968-5991883 398 497299 899+3443999+4982370+1995 157+99 第十二種178x101-17883x102-83x217x23-23x7 83102832178101178 35x127-35x16-11x35123181233+85123 容易出錯類型共五種類型600-601520x4 20x4736 -35x20 25x4 25x498-18x5+25 56x8 56x8280 - 80 4 12x6 12x6175-752525x8 25x880-20x2+60 36x9 36x95 / 13 36-366-6 25x8 25x

5、8100+45-100+45 15x97+3 100+1-100+1 48x99+11000+8-1000+8 5+95x28 102+1-102+1 65+35x1325+75-25+75 40+36020-10 13+24x8672-36+64324-68+32100-36+64 簡便計(jì)算綜合練習(xí)題1 得分263961263569569 9955 55 7810178 5276477676 13456 13445134 6 / 13 48522448 2523 404 9999991999 18498 695202 864199 738301 380476120 569468 432131

6、7042525614753 37312929 189897428425 1253225 972125 簡便計(jì)算練習(xí)題 2得分720165 63042 456 2563610235 9842 158+262+138 375+219+381+225 7 / 13 50012471021232 181+2564+2719378+44+114+242+222 276+228+353+219 (375+1034)+(966+125)(2130+783+270)+1017 99+999+9999+99999 7755 (2187+755) 2214+638+286 30657381065 899+344

7、2357 183317357 23651086214 497299 2370+1995 7755(2187+755) 簡便計(jì)算練習(xí)題3 得分3999+498 1883398 1225 7524 138254 (13 125)(38)(12+24+80) 50 2532125 32(25+125) 88 125 10276 8 / 13 178101178 8436+6484 7599+27598199 123181233+85123 50(344)3 2524+16 17899+178 7942+79+79 57 7300254 8100475 158+262+138簡便計(jì)算練習(xí)題4 得分12

8、4824 315015 480025 21500125 16800120 301002100 3200040049700700 375+219+381+225 5001 2471021232 181+2564+2719 9 / 13 378+44+114+242+222 276+228+353+219 (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999 7755(2187+755) 2214+638+286 30657381065 899+344 3999+498 2357183317357 23651086214 497299

9、 簡便計(jì)算練習(xí)題5得分1225 7524 138254 (13 125)(38) (12+24+80)50 70425 2532125 32(25+125) 88125 10276 5898 178101 178 10 / 13 8436+64847599+275 83102832 98199 123181233+85123 50(344)3 25 24+1617899+178 7942+79+79 57 215001257300254 8100475 16800120 簡便計(jì)算練習(xí)題 6得分ab c = a bc) 2.73 0.89 1.27 4.37 0.28 1.63 5.72 abc

10、 = a bc10 0.432 2.568 9.3 5.26 2.74 14.95.24.9 18.32 5.47 4.32 11 / 13 a b c = a b c 25 6.8 0.04 0.25 32 0.1256.4 1.25 12.5 c a+b= c a cb 0.45 201 0.58 10.1 50.2 99 4.7 9.9 簡便計(jì)算練習(xí)題7得分3.28 5.7 6.72 5.7 2.1 99 2.1 23 0.1 2.3 9.9 0.18 4.26 0.18 4.26 0.58 1.3 0.58 1.3 7.3 4 2.7 0.25 3.75 0.5 2.75 25.26 0.125 2.74 8 12 / 13 a b c = a b c 6.3 1.8 9.5 1.9 8 12.8 0.4 1.6 930 0.6 5 63.4 2.5 0.4 7.7 1.54 0.7 簡便計(jì)算練習(xí)題8得分6.94.8 3.1 15.89 (6.75 5.89)7.85 2.340.854.66 35.61.815.67.2 13.75 (3.75 6.48)47.8 7.45+2.55 66.868.661.34 0.25 16.24 0.25 3