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1.直接写出得数。
9.1+5.7=
9.8+3.2=
9.3-1.9=
3.6-1.6=
5.7+2.5=
3.9+2.2=
8.6-1.9=
7.7+1.2=
3.9+3.9=
5.8+1.9=
9.4-2.7=
8.2+1.6=
6.7+0.3=
8.5+2.5=
4.5-3.8=
5.3+4.5=
9.1+5.7=
9.8+3.2=
9.3-1.9=
3.6-1.6=
5.7+2.5=
3.9+2.2=
8.6-1.9=
7.7+1.2=
3.9+3.9=
5.8+1.9=
9.4-2.7=
8.2+1.6=
6.7+0.3=
8.5+2.5=
4.5-3.8=
5.3+4.5=
答案
9.1+5.7=14.8
9.8+3.2=13
9.3-1.9=7.4
3.6-1.6=2
5.7+2.5=8.2
3.9+2.2=6.1
8.6-1.9=6.7
7.7+1.2=8.9
3.9+3.9=7.8
5.8+1.9=7.7
9.4-2.7=6.7
8.2+1.6=9.8
6.7+0.3=7
8.5+2.5=11
4.5-3.8=0.7
5.3+4.5=9.8
9.8+3.2=13
9.3-1.9=7.4
3.6-1.6=2
5.7+2.5=8.2
3.9+2.2=6.1
8.6-1.9=6.7
7.7+1.2=8.9
3.9+3.9=7.8
5.8+1.9=7.7
9.4-2.7=6.7
8.2+1.6=9.8
6.7+0.3=7
8.5+2.5=11
4.5-3.8=0.7
5.3+4.5=9.8
2.列竖式计算。
•3.6+6.8=
•14.1−5.9=
•44.5+16.9=
•3.1+7.4=
•5.3+7.8=
•7.5−5.6=
•18.9+19.9=
•42.8−29.1=
•3.6+6.8=
•14.1−5.9=
•44.5+16.9=
•3.1+7.4=
•5.3+7.8=
•7.5−5.6=
•18.9+19.9=
•42.8−29.1=
答案
3.6+6.8=10.4
14.1−5.9=8.2
44.5+16.9=61.4
3.1+7.4=10.5
5.3+7.8=13.1
7.5−5.6=1.9
18.9+19.9=38.8
42.8−29.1=13.7
14.1−5.9=8.2
44.5+16.9=61.4
3.1+7.4=10.5
5.3+7.8=13.1
7.5−5.6=1.9
18.9+19.9=38.8
42.8−29.1=13.7
3.算一算，连一连。
10.7−4.5
2.8+2.8
2.3−0.7
5.1−4.3
0.5+6.6
5.6
6.2
7.1
1.6
0.8
10.7−4.5
2.8+2.8
2.3−0.7
5.1−4.3
0.5+6.6
5.6
6.2
7.1
1.6
0.8
答案
10.7−4.5=6.2
2.8+2.8=5.6
2.3−0.7=1.6
5.1−4.3=0.8
0.5+6.6=7.1
连线对应：10.7−4.5连6.2，2.8+2.8连5.6，2.3−0.7连1.6，5.1−4.3连0.8，0.5+6.6连7.1
4.比大小。
3.7+4.8○8.8
5.3+2.4○7.8
14.2+7.5○21.8
7.5+2.2○9.6
16.5+4.3○20.9
41.8+8.8○50.7
5.8+2.8○8.7
11.8+4.7○16.4
17.6+2.2○15.2
3.7+4.8○8.8
5.3+2.4○7.8
14.2+7.5○21.8
7.5+2.2○9.6
16.5+4.3○20.9
41.8+8.8○50.7
5.8+2.8○8.7
11.8+4.7○16.4
17.6+2.2○15.2
答案
3.7+4.8＜8.8
5.3+2.4＜7.8
14.2+7.5＜21.8
7.5+2.2＞9.6
16.5+4.3＜20.9
41.8+8.8＜50.7
5.8+2.8＜8.7
11.8+4.7＞16.4
17.6+2.2＞15.2
5.3+2.4＜7.8
14.2+7.5＜21.8
7.5+2.2＞9.6
16.5+4.3＜20.9
41.8+8.8＜50.7
5.8+2.8＜8.7
11.8+4.7＞16.4
17.6+2.2＞15.2
