四年级下册简便运算题目 四年级下册数学简便运算题100道
\u56db\u5e74\u7ea7\u6570\u5b66\u4e0b\u518c\u7b80\u4fbf\u8ba1\u7b97\u98981000\u9053\u8fd0\u7528\u4e58\u6cd5\u5206\u914d\u5f8b\uff0c\u4e58\u6cd5\u7ed3\u5408\u5f8b\u6c42\u89e3\u3002
\uff081\uff09300\u00f7125\u00f78=300\u00f7\uff08125\u00d78\uff09=300\u00f71000=0.3
\uff082\uff09396-96-172-28 =\uff08396-96\uff09-\uff08172+28\uff09= 300-200 = 100
\uff083\uff09125*24 = 125*8*3 = 1000*3 = 3000
\uff084\uff0926*15 = \uff0820+6\uff09*15 = 20*15 + 6*15 = 300+90 =390
\uff085\uff0925*99*4 = 25*4*99 = 100*99 = 9900
\uff086\uff09250*32 = 250*4*8 = 1000*8 = 8000
\u7b80\u4fbf\u8fd0\u7b97\uff1a
1\u300124.6-3.98+5.4-6.02
\u89e3\u6790\uff1a\u6b64\u9898\u5229\u7528\u52a0\u6cd5\u4ea4\u6362\u7ed3\u5408\u5f8b\uff0c\u51d1\u6574\u518d\u8ba1\u7b97\u3002\u6b65\u9aa4\u5982\u4e0b\uff1a
24.6-3.98+5.4-6.02
=\uff0824.6+5.4\uff09-\uff083.98+6.02\uff09
=30-10
=20
2\u300127\u00d717/26
\u89e3\u6790\uff1a\u6b64\u9898\u5148\u7528\u52a0\u6cd5\u5206\u914d\u5f8b\uff0c\u628a27\u8f6c\u6362\u6210\uff0826\uff0b1\uff09\uff0c\u518d\u5229\u7528\u4e58\u6cd5\u7ed3\u5408\u5f8b\uff0c\u4f7f\u5f97\u8fd0\u7b97\u7b80\u4fbf\u3002
27\u00d717/26
\uff1d\uff0826\uff0b1\uff09\u00d717/26
\uff1d26\u00d717/26\uff0b1\u00d717/26
\uff1d17\uff0b17/26
\uff1d17\u53c817/26
3\u3001528-99
\u89e3\u6790\uff1a\u5229\u7528\u51d1\u6574\u6cd5\u548c\u51cf\u6cd5\u7ed3\u5408\u5f8b\u8ba1\u7b97\uff0c\u5148\u5229\u7528\u51d1\u6574\u6cd5\u628a99\u53d8\u6362\u4e3a\uff08100-1\uff09\uff0c\u518d\u8fd0\u7528a-b-c=a-(b+c)\u6765\u7b80\u4fbf\u8ba1\u7b97\uff0c\u6b65\u9aa4\u5982\u4e0b\uff1a
528-99
=528-\uff08100-1\uff09
=528-100+1
=428+1
=429
\u542b\u4e49\uff1a
\u201c5436\u00f718\u201d\u8fd9\u662f\u7b2c\u516b\u518c\u7ec3\u4e60\u4e8c\u5341\u4e03\u7b2c\u4e94\u9898\u4e2d\u7684\u4e00\u9053\u5173\u4e8e\u9664\u6cd5\u7684\u7b80\u4fbf\u8fd0\u7b97\u9898\u3002\u6b63\u662f\u56e0\u4e3a\u9898\u76ee\u7684\u8981\u6c42\u662f\u201c\u4e0b\u9762\u5404\u9898\uff0c\u600e\u6837\u7b80\u4fbf\u5c31\u600e\u6837\u7b97\u201d\uff0c\u6240\u4ee5\u5b66\u751f\u7684\u7b54\u6848\u53ef\u8c13\u662f\u591a\u79cd\u591a\u6837\uff0c\u4e3b\u8981\u6709\u4ee5\u4e0b\u56db\u79cd\uff1a
\u2460\u76f4\u63a5\u7b97\u5c31\u975e\u5e38\u7b80\u4fbf\uff1b
\u24615436\u00f718=5400\u00f718+36\u00f718=300+2=302\uff1b
\u24625436\u00f718=5436\u00f79\u00f72=604\u00f72=302\uff1b
\u24635436\u00f718=5436\u00f76\u00f73=906\u00f73=302\u3002
1。178x101-178=178x(101-1)
=178x100
=17800.
2. 83x102-83x2=83x(102-2)
=83x100
=8300.
3. 17x23-23x7=23x(17-7)
=23x10=230.
4. 35x127-35x16-11x35=35x(127-16-11)
=35x100
=3500.
5. 125x32x8=(125x8)x32
=1000x32
=32000.
6. 25x32x125=(25x4)x(8x125)
=100x1000
=100000.
7. 88x125=8x125+80x125
=1000+10000
=11000.
8. 72x125=9x(8x125)
=9x1000
=9000.
178×（100-1）
=178×100
=17800
83×（102-2）
=83×100
=8300
（17-7）×23
=10×23
=230
35×（127-16-11）
=35×100
=3500
125×8×32
=1000×32
=32000
（25×4）×（125×8）
=100×1000
=100000
11×（8×125）
=11×1000
=11000
9×（8×125）
=9×1000
=9000
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绛旓細1銆24.6-3.98+5.4-6.02 瑙ｆ瀽锛氭棰樺埄鐢ㄥ姞娉曚氦鎹㈢粨鍚堝緥锛屽噾鏁村啀璁＄畻銆傛楠ゅ涓锛24.6-3.98+5.4-6.02 =锛24.6+5.4锛-锛3.98+6.02锛=30-10 =20 2銆27脳17/26 瑙ｆ瀽锛氭棰樺厛鐢ㄥ姞娉曞垎閰嶅緥锛屾妸27杞崲鎴愶紙26锛1锛夛紝鍐嶅埄鐢ㄤ箻娉曠粨鍚堝緥锛屼娇寰杩愮畻绠渚銆27脳17/26 锛濓紙26锛1锛壝17...
绛旓細涓. 鍔犳硶浜ゆ崲寰嬶紱锛坅+b=b+a)鍜屽姞娉曠粨鍚堝緥锛(a+b)+c=a+(b+c)銆98+265+202 77+175+223+125 96+266+204 355+260+140+245 234+130+270+366 1034+78+320+102 浜. 涔樻硶浜ゆ崲寰嬶紱锛坅脳b=b脳a)鍜屼箻娉曠粨鍚堝緥锛(a脳b)脳c=a脳(b脳c).250脳13脳4 43脳4脳5 40...
绛旓細锛1锛67锛42+33+58=200 锛2锛258锛58锛26锛74=100 锛3锛125脳16=2000 锛4锛50脳锛2脳4锛壝25=10000 锛5锛7脳8脳3脳125=21000 锛6锛26脳103=2678 锛7锛501脳12=6012 锛8锛25脳锛40+8锛=1200 锛9锛39脳14锛61脳14=1400 锛10锛163脳8锛37脳8=1600 锛11锛202脳13 锛12锛77...
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