六年级数学下册计算题专项练习
一、解方程 x-
52x=14 60%+41x=2017 x －15%x=37.4
31X+5=50%X 60%X +52= 5 x -62.5%x=31×45
4(X-1.2)=2.5X+5.2 215 x ＋134 =325 23 x －2.5=216
34 ×5－58 x=1 42:35 =X ：57 195 +1.2X=25
X ： =21: : =X:10 (1-25%)X=36
X/5-X/6=1.4 20%X-1.8×4=0.8 4(X=2)=5(X+1)
二、脱式计算。
36×（7/9+5/6）÷29/5 (1-
21-41)÷81 （1÷14 + 14 ÷1）×8 145854181
12÷（1+31-65） 52×4÷52×4 1×1001÷20001×10
1
0.7÷[（5/6-1/4 ）×24] 31÷21－45×52 53＋41÷（32－23×3
1）
52×（43＋51）÷1019 136÷[117×（1－73）] 5-23×2110-7
2
3/4×[1÷（1/5-1/20）] 15.2-20/7+3.8-6/7 168.1÷(43/10×2-0.4)
三、能简便的要简便计算
85×43＋41×85 （125＋167）×48 3-127-12
5
43×52+43×0.6 1175.111175.12÷-⨯ 257×101-25
7
28×(41+71-143) 503
×51 0.8+63×4/5+36×80% 25
43×4 （39×72+72×4）÷72 127-(41-12
5)
5/7-0.35+2/7-0.65 7/8×43+87.5%×36+0.875 90×
491
9.07×99+9.07 67÷4+33÷4 25125.032⨯⨯
257×118+257÷311 81873.48127.4+÷+⨯ 32127475.473434÷⎪⎭⎫ ⎝⎛⨯+⨯
()25
16
28.472.525.10⨯-- 2417×43＋2417÷4 259
÷ 54 ÷ 45
4358311431⨯÷+÷ =--125312785.4 =+-1271127173.5
=÷-÷1072.01002.7 =+⨯25.025.099 =++4
1442.3435
谓语动词单复数的使用规则
一般every, each 后用单数;all 后面的名词是复数.
1)名词性从句及不定式、动名词作主语时，谓语动词一般用单数形式。
【例如】
To finish the work in advance is what he wants.
Smoking cigarettes is dangerous to your health
What seems easy in theory is difficult in practice.
What caused the accident is a complete mystery.
但是，what引导名词从句作主语时，其表语是复数形式时，系动词也可以是复数形式。
【例如】
What we badly need here are qualified teachers.
2)当主语是单数，后面跟着由including, with, together with, along with, like, in addition to, as well as, rather than, but, except, more than, accompanied by 等连接的短语时，谓语动词用单数。
【例如】
Mary as well as her sister likes listening to music.
Doctor Richards, together with his wife and three children, is to arrive on the afternoon flight.
My best friend rather than anyone else has got the first prize in the speech contest.
3) one, one of, every, everyone, everybody, each, many a, either, neither, no one, nobody, anyone, anybody, someone, somebody用作主语或修饰主语时，谓语动词用单数形式。
【例如】
Each man, woman and child has the same right.
Many a student doesn’t like to do their homework. (many a student ＝many students)
Either of students is going to compete for the president of the students’ union.
More than one person was involved in the case.
Neither of the young men who had applied for a position in the university ____.
A) has been accepted
B) have been accepted
C) was accepted
D) were accepted
neither用作主语或修饰主语时，谓语动词用单数形式。
此外，定语从句用过去完成时，主句应用一般过去时，故答案为C。