北师大小学数学三年级下册计算竞赛题

1、精选文档北师大小学数学三年级下册计算竞赛题班别 姓名 成绩可编辑比赛时间：40分钟 满分：100分口算。（22挑战计算极限，争当计算明星！力口油!分）70 x (40 32)=90 +5 x3 =3x10 =30 +10 =300 +5 =180 +20 =85 5 =70 十5 =450 +5 =84 +42 =27 x30 =91 -59 =320 -180 =95 +1 =72 +4 =125 -25 x2 =45 +55 +5 =80 x40 =13 x4 =720 +9 =0+90 =57 +3 =25 x4 =12 x40 =600 -50 =84 +12 =11 x70=30 x

2、40=480 +90 =8000 +2 =50 x0 x8 =18 x5 =25 x20 =16 x6 =10 x40 =0 + 8 =15 x6 =240 +6 =500 x3 =420 +3 =1000 5 =40 + 580 =510 +7 =102 +20 =75 +25 5 =40 x60 =160 x4 =720 0 =12 x50 =32 x30 =630 +9 =16 x60 =0 x930 =910 +3 =75 +15 =560 +4=200 +4 =4000 +50 =32 +47 x12 =10 +10 x30 =6x (103 98) =7 + 3x0 =51 -4x

3、6 =420 +2 x8 =750 (70+80 )=300 +2 +5 =二、笔算。54 x63 =（乘法不用验算，除法要验算）（32分）25 x38 =36 x19 =774 +8 =508 +2 =370 抬=19 x47 =900 +5 =23 x34 =392 +4 =360 x5 =32 x68 =203 +9 =63 x36 =26 x38 =770 +5 =696 +2 =882 +4 =809 +8 =56 x79 =64 x28 =820 +3 =630 6=458 +4=4 + 0.6=7.3 -2.9=100.7=8.2-5=6.5+4.7=1.2-0.3=4.6+2.

4、4=3.8+6.6=三、估算。（5分）238气q876 +3弋89 x30 弋32 x48 q890 +9 弋459 +50 q65 x11 弋76 x11 q417气弋43 x22 q417 -60 q27 x19 q753 +5 弋52 x68 q351 +5 弋45 x19 q53 x21 q84 x21 弋38 x21 弋35 x21 q四、计算与换算。(12分)3日=()小时 48个月=()年4时20分=()分 五月份=()天35天=()星期5年=()月3平方米=()平方分米3厘米=()分米32平方分米=()平方厘米138秒=()分()秒300公顷=()平方千米80000平方米=()公顷1元2分=（）元顷1990 是（）年,6.02 米=（）米（五、脱式计算。（24分）439 + 46 x76厘米=（）米2月有（）天。）分米（）厘米248 +4x1813平方千米二()公9分米=()米1.6 元=1()6()67 x (96 气)25 x17 120(450 175 ) +5268+29 x65315 -345 +3574 125118)9