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题型:口算与估算 题类: 难易度:容易
新领程卓越版数学一年级下2 20以内的退位减法第7课时十几减5、4、3、2
13-5=
11-2=
12-4=
14-5=
11-4=
14-3=
14-7=
12-3
12-5=
13-4=
11-5=
13-3=
6+5={#blank#}1{#/blank#},11-5={#blank#}2{#/blank#},11-6={#blank#}3{#/blank#}
9+5= 18-2= 12+3= 13-7=
10-6= 7+4= 9-7= 12+3=
4+12= 3+7= 12-4= 16-8=
15+0= 6+8= 19-4= 6+2=
4+7+2= 6+9-10= 12-4-5=
12-{#blank#}1{#/blank#}=6 4+{#blank#}2{#/blank#}=13 15-{#blank#}3{#/blank#}=8
10+{#blank#}4{#/blank#}=10 {#blank#}5{#/blank#}-5=12 11-{#blank#}6{#/blank#}=7
6+{#blank#}1{#/blank#}=11 3+{#blank#}2{#/blank#}=63 17-{#blank#}3{#/blank#}=9
{#blank#}4{#/blank#}+4=16-4 {#blank#}5{#/blank#}-8=14-7
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