期末检测
一、
1: 9 0.05 12.3 7.2
0.03 0.6 0.036 20
2: (1)26.8+7.3=34.1 (2)4.13-2.59=1.54 (3)5.6+7.84=13.44
(4)8-1.57=6.43 (5)12.9×0.16=2.064 (6)8.93÷1.9=4.7
(7)3.64×2.8=10.192 (8)8.4÷0.28=30 (9)32.5×0.8=26
3: (1) 15.6-9.29-0.71
= 15.6-(9.29+0.71 )
= 15.6-10
= 5.6
(2)3.06÷[1.8×(2.41-1.91)]
= 3.06÷[1.8×0.5]
= 3.06÷0.9
= 3.4
二、
⒈ 北 50
⒉ 20.2
⒊ 1 0.01 0.01
⒋ 35 350 3500