"20.15加7.62加7.85等于几"...20.15加7.62加7.85等于几

　"15.20加20.76等于几"...15.20加20.76等于几

　"20.15加7.62减7.57等于几"...20.15加7.62减7.57等于几

　"15.28加20.72等于几"...15.28加20.72等于几

　"20.55加7.85等于几"...20.55加7.85等于几

　"20.15加29.85等于几"...20.15加29.85等于几

　"20.88加15.46等于几"...20.88加15.46等于几

　"15.021加22.73等于几"...15.021加22.73等于几

　"15.83加21.7等于几"...15.83加21.7等于几

　"15.93加8.7-20等于几"...15.93加8.7-20等于几