六级数学上册口算题300道

1、x 2=7.5 2.5=x 0.8=6 x 3.4=0.64 0.32=1.4 0.5=0.75 100=0.02 0.5=3.6 &3二6.3 子二5.6 400=0.75 4.25=0.125 8=4.8 4.3=0.96 4=0.56 48=0.36 4.4=0.64 4.8=0.72 4.6=3.6 44=x 1.1 =7.2+12.8=46.7 3.8=12.8 4=5.2 43=12.5 4=1.64 41 =10 吃0=2445=8.65 10=0.35 6=3.08 0.01 =4.95 100=6.9 0.1 =0.4 0.5=2.4 4.8=10.8 4=9.6 4

2、.8=1.08 4= x 5=x 0.4=32=53512=4550 x=6414=52844 =954=4555 4>622343 =1262 =3.14飞=1136 =13+ 7 =4431十=411=594=54293x 4 =41=5437=7x 1090 9 =1010-323 x 12=314 x 7 =_511z10xix 15=64 1112x 7x 16 x 8=(11+ 3)x 4=7_161616435 4 751218 4 2715471420 4 15417-14 =243-15 _516X 4 -=51 1+ X 24=43+ 0.4=31 _83 =51(-

3、)X0=654X25=533751-X 6=8X昙-昙=16 16122.8 送5+ 12 >2.5=12.5 >2 >2.5=1 1+ 丄> 12 =3 448 =510 0.9 =8.2+ 0.54 + 0.46 =4 1 =5 311 51 +12 61232X=85-26=X 11 7.9=213X 2=5X 13=26275=991111232345 X 101=55心270 - 18=1.25 0.25+ 0.75=1111 十>=23 232 + 315157- 1.4 =0.8 =0.77 + 0.33 =32X=53512X4550X63 弋.6

4、 =5136X =254+ -=8 892X =538-8=111 1I=4 33 -X 15=5=13+ =2432X =53512X =455 =0X641 52丄111232384=95、 4+ 6.43=1.25 0.25 + 0.75=X 455=5X 18=926 X 丄=26X 2=7514X =78 -4=93 1.95=7 3_8 41X 27=3X 4=3X 11 =221-5 =3X 3=10.5 =4510-=74 7_5 101415X 45211428 - =31X 8=41 2. .2310X =61+ 3=4-0.07=1226 X =138 8. 33_125

5、X 8=6X =75X =1076+ 6=72288 - =31 1+ =2 234 X =425 X 4=10-=814=31715X 60=1229X =5836112-=3512X =456 - 0.5=-4.2=11214X =475-1 =182 1X =3 24 J =5 25 7X =6 824 X 5=8 8 . =9923X =965 2 =6 3 =21=3636 198=-0.36=7- 14=彳2355彳10.77+ 0.33 =7“1+ =7=4310八/10.6 =53005-899=1 X =447.25+2.75=“ 1X ><8 =59.8 98

6、=410-0.9 =x 9 x 8 =1- 1 =48.2+ 0.54 + 0.46 =1 1 _41 =3 437 X 5=5 359-0.9=11515=71 11 + 1x 24=+ 12 6 12494332X=72 X 0.4=8527 1672 - 0.4=26=23+ 6.43=2 - - X 2=324X 匕=4X 11-7.9=1 11x 32=2 6 =0.2 -=53 c 3343+ - 3+ =+ =“3244552 31 x 30=3 125X242 0.2 2=+ =45=333X =12-=- 0.2488=X 4X 0.5=4 312-0.2 =X 0.2=x=

7、52X 8=578+216=3 327+ 68=85.2- 3.25 =7 5910 - 540=1569-399=18 >40=3. 2- _ =23.2-0.5=910 £0=278 -=-x 81 =9丄丄3 -8=1 , 13 + 5 =10 -).1= X-=X=1=23310 0.5 =1-10 =2- X 2 =412- 4 =410- 210 =0. 99 X 9 + 0. 99 =125 5 =2391+ =X=15154277- 1.4 =82.5- 3.25 =3_90.8 =5 10=1 13- 5=18.25-3.3=5 -86 x 15=0- 9.3

8、=453+198=50 - 0.1 =9 X 81 =50X 6 =324 X 8 =4X 0.02=邑二16 X 15=21 218 十 16=7 110+2 =x 8=236+64=X 0.5=430.5=7X 0.6=1313 15=5.01-1.8=X 9+0.99=1 1 4+3=10-7.26=75%+25%=38 - 4=355 X 6=1 155_12 十 6=112 -6 :十4=99-33=-0.6=324-8111-2-32+ 3 =1-0.25=211+7 =910 - 70=-100=9X 3.14=1.63+2.3=2 丄5十4 =1480 X 3 =-0.25=136 X 4 =乙0X 8=125 - 5= 312 - 3=8X 4 =63 - 0.1 =9 110 - 10X 8=X 4=25 X 4=丄 36 + 8 =2 丄5+ 3 =32 X 2.5=X 4=2_18X 3=95_5 X 4 X 7 =-0.4=1+0.25=134十r =_516 X2249 + 3 + 9 =14十3=78+26=0.38+4.2=X 4 X 7=18.25-3.3=314 - 3.14=3.25+1.5=5 16-2 =855十8 =7518 十 9 =XX 4=2 15 x 3 =2 15 x 3 =1 12 -6 =9.7+0.