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题型:判断题 题类:常考题 难易度:容易
整十数加、减整十数1038(10题)
40+50=(9)
49-30={#blank#}2{#/blank#}
69-30={#blank#}3{#/blank#}
79-30={#blank#}4{#/blank#}
80+50={#blank#}1{#/blank#}
30+90={#blank#}2{#/blank#}
40+2= 70+3= 10+8= 80+0= 40+5=
3+90= 10+6= 30+2= 50+9= 9+80=
1+10= 8+80= 20+1= 20+3=
0+10= 18–8= 86–6= 68–8= 65–5= 55–50= 93–90= 35–5= 45–40= 75–70= 38–30= 27–20=
57–7= 37–7= 100–30= 66–6=
43–3= 94–90= 34–30= 89–9= 51–1=
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