问题
解答题
怎样简便怎样算
|
答案
×19 36
=9 38 1 8
48×
=4747 48
-7 9
×4 13 7 9
=
×（1-7 9
）4 13
=
×7 9 9 13
=7 13
×（9-7 9
）1 11
=
×9-7 9
×7 9 1 11
=7-7 99
=692 99
（2
+14 5
）-（12 7
+1 5
） 2 7
=（2
-14 5
）+（11 5
-2 7
）2 7
=1
+13 5
=23 5
12.1-（
+1 15
）×105 1 21
=12.1-（
×105+1 15
×105）1 21
=12.1-（7+5）
=0.1
23×
×25 13 3 5
=23×
×5 13 13 5
=23
1.8×2
=1.8× =3.9+5.4 =9.3 9×1 =9×（1 =9×2 =18 | |||||||||||||||||
= = =2 |
| 11 |
| 14 |
| 5 |
| 7 |
| 5 |
| 28 |
=
×28-11 14
×28+5 7
×28+10.15 28
=22-20+5+10.1
=17.1
（
+1 30
+1 35
）×21 63 1 7
=
×1 30
+15 7
×1 35
+15 7
×1 63 15 7
=
+2 7
+3 49 5 147
=56 147
×8078 79
=
×（79+1）78 79
=
×79+78 79 78 79
=7878 79
×24 5
×11 7 3 4
=
×4 5
×15 7 7 4
=3
8×1255 16
=8×125+8×5 16
=1000+2.5
=1002.5
5.5×6
+32 3
×51 3 1 2
=5.5×（6
+32 3
）1 3
=5.5×10
=55
897×
-3 8
+104×0.375 3 8
=
×（897-1+104）3 8
=
×10003 8
=375
5
×86+5.75×（3.5-33 4
）1 10
=
×86+5.75×（3.5-3.1）23 4
=494.5+5.75×0.4
=494.5+2.3
=496.8
根管钙化，根尖周暗影较大，经过多次正规根管治疗根管不通，拟行根尖手术