小学数学人教2011课标版一年级整十数加、减整十数练习-(2).docx

2.比一比，算一算。3 +2 = 4 + 5 = 6 4 = 7- 3 =30+20 = 40+50 = 60-40 = 70-30 =4. 1 +3 +4 = 9 4 -3 =10+30+40 = 90-40-30 =