茅桥小学六年级数学“计算小能手”竞赛试卷
一、直接写得数(每题1分,共28分) 111648 + = 3.5+6 = 2― = ―12427515
111211 ― = ― = 0.2―+ = [1**********]2 ×4= ×××1 = 46151693
733321 × = 0÷÷ = = 2445452
5283522 ÷1 ÷ = ÷+ = 18398839
12π= 0.4 ×3.14= 0.92 = 2.5×3.4= 228 = 3
二、脱式计算,能简算的要简算。(每题4分,共40分)
11111×125× ×8 (++×24 4125236
34231125 ×(÷÷+3 ÷ 75315887
20 - (5.6 + 4.8)÷1.3 3.2×(2.15 + 1.95÷6.5)
7
39111 36×( + -) 10463( + ) ÷ +
4514
517 +6.1 0.36×101 17×23-23×7 66
5521
7+6+7+6 99×87 42
(12
4+9) ×36 5×99+5 2000
三、解方程(每题3分,共18分)
10×x =8
25
x ×3=18×1
54
4x —3 ×9 = 29
×4×25 ÷125÷8 33÷x =1120 x ×1×335=4 12x + 16x = 4