妈妈今年多少岁?

55+4 = 67+2 = 40+50 = 80 – 30 = 70 – 20 =
55+40 = 37+60= 40+28 = 76 +10 = 40+8=
83 – 20 = 74 – 60 = 37 – 3 = 63 – 20 = 46 – 10 =
算式:×=



B .
C .
19+(8-6)= 52-7-20= 6+(24-9)=
46-8-8= 5+(46-6)= 90-50+20=
9×86×7 8×57×7
49=36 27-918 16+2035
404=36 3×4=62