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若102.02≈10.10,10.202≈3.19,则±1.0202≈;若33≈1.442,330≈3.107,3300≈6.694,则30.3≈,3x≈31.07,则x=.

题目详情
102.02
≈10.10,
10.202
≈3.19,则±
1.0202
≈______;
33
≈1.442,
330
≈3.107,
3300
≈6.694,则
30.3
≈______,
3x
≈31.07,则x=______.
▼优质解答
答案和解析
102.02
≈10.10,
∴±
1.0202
≈±1.010;
3300
≈6.694,
30.3
≈0.6694;
330
≈3.107,
3x
≈31.07,
∴x=30000,
故答案为:±1.010,0.6694,30000.