妈妈买红扣子8个，白扣子6个，黑扣子4个。)|2_:p*E1D
（1）红扣子比白扣子多多少个？)|2_:p*E1D
算式：提示)f5v.Z7N1?5[.]6Q6W4})|2_:p*E1D
答：红扣子比白扣子多*b(Y0t.~+N1Y0}个。)|2_:p*E1D
（2）黑扣子比白扣子少多少个？)|2_:p*E1D
算式：提示;P:M9F:F)|2_:p*E1D
答：黑扣子比白扣子少)N(a._2W6j7u,E8|个。)|2_:p*E1D