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1、精品好文檔,推薦學習交流It’smygreat?honor?totalkaboutmyfamily.Myfamilyisverywarmand?harmonious.Therearefourpeopleinmyfamily---father,mother,brotherandme.MyparentsandmybrotheraretypicalChinesefarmers.Bothofthemarehard-working,?diligent?andkind.Inordertosupportthefamilyandpaytheexpen
2、sivetuitionfeeforme,theydothefarmworkveryhard,buttheynevercomplain.?Theirgreatestwishistoletmehaveagoodfuture.That’smyfamily,plainbuthappiness.?I?knowthatknowledgecanchangeone’slife.?So?I?willstudyharder.Nomatterhowdifficultitis,I?willpersistinandnevergiveup.?Then?I?wil
3、lreturntomyparentsandmybrother,usingallmyeffortstomakemyfamilybetterandbetter.SoIhopeyoucouldgivemeachancetocompletemyeducation.?Onlyinthisway?canIcreateasteadyandmorehopefulconditiontochangemylifeandmyfamily.That’sall.?Thankyou!乘除法運算法則1、整數(shù)乘法法則:1)從右邊起,依次用第二個因數(shù)每位上的數(shù)去乘第一個
4、因數(shù),乘到哪一位,得數(shù)的末尾就和第二個因數(shù)的哪一位對齊;2)然后把幾次乘得的數(shù)加起來。(整數(shù)末尾有0的乘法:可以先把0前面的數(shù)相乘,然后看各因數(shù)的末尾一共有幾個0,就在乘得的數(shù)的末尾添寫幾個0。)2、小數(shù)乘法法則:1)按整數(shù)乘法的法則算出積;2)再看因數(shù)中一共有幾位小數(shù),就從得數(shù)的右邊起數(shù)出幾位,點上小數(shù)點。3)得數(shù)的小數(shù)部分末尾有0,一般要把0去掉,進行化簡。3、分數(shù)乘法法則:??把各個分數(shù)的分子乘起來作為分子,各個分數(shù)的分母相乘起來作為分母,然后再約分。4、整數(shù)的除法法則僅供學習與交流,如有侵權(quán)請聯(lián)系網(wǎng)站刪除謝謝2精品好文檔,推薦
5、學習交流1)從被除數(shù)的高位起,先看除數(shù)有幾位,再用除數(shù)試除被除數(shù)的前幾位,如果它比除數(shù)小,再試除多一位數(shù);2)除到被除數(shù)的哪一位,就在那一位上面寫上商;3)每次除后余下的數(shù)必須比除數(shù)小。5、除數(shù)是整數(shù)的小數(shù)除法法則:1)按照整數(shù)除法的法則去除,商的小數(shù)點要和被除數(shù)的小數(shù)點對齊;2)如果除到被除數(shù)的末尾仍有余數(shù),就在余數(shù)后面補零,再繼續(xù)除。6、除數(shù)是小數(shù)的小數(shù)除法法則:計算除數(shù)是小數(shù)的除法,先移動除數(shù)的小數(shù)點,使它變成整數(shù);除數(shù)的小數(shù)點向右移動幾位,被除數(shù)的小數(shù)點也向右移動幾位(位數(shù)不夠的,在被除數(shù)的末尾用“0”補足);然后按照除數(shù)是整
6、數(shù)的除法法則進行計算。1)先看除數(shù)中有幾位小數(shù),就把被除數(shù)的小數(shù)點向右移動幾位,數(shù)位不夠的用零補足;2)然后按照除數(shù)是整數(shù)的小數(shù)除法來除。7、分數(shù)的除法法則:1)用被除數(shù)的分子與除數(shù)的分母相乘作為分子;2)用被除數(shù)的分母與除數(shù)的分子相乘作為分母。(即被除數(shù)不變,乘除數(shù)的倒數(shù))僅供學習與交流,如有侵權(quán)請聯(lián)系網(wǎng)站刪除謝謝2