最新人教版小学六年级上册数学简便计算
解放战争王树增-大理游记
433
2.8×5.6+3.4×2 +280% 1.7×
+2.3× 2.64÷7+3.36× + ÷6+ ÷ +
× 2 ÷ ÷
58877776554945
545311
7.4+4 +2.6+5 24×( - + )
0.125×2 ×32
9912862
43311
2.8×5.6+3.4×2 +280%
1.7× +2.3× 2.64÷7+3.36× +
58877
(
8
9
+
2
3
-
1
27
)×27
1.25×2
7
10
+3
4
5
÷0.8
26×2
11
13
59291941
7
÷
13
+
7
÷
13
23×3
23
6.28×
7
+6.28÷2
3
63
100
×101
8.75-2
5313
6
-(1
4
+3
6
)
21
7
÷3
2600÷(2600÷2+2600÷4)
4.4-1.6-1
2
5
9×
7
10
+3×
7
10
-2×
7
10
7
10
×9.9
1
5
×0.5×
1
5
×4.5
551215
22
÷
11
+
25
×
16
7.4+4
5
9
+2.6+5
4
9
24×(
5
12
-
3
8
+
1
6
) 0.125×2
1
2
×32
(
8
9
+
2
3
-
1
27
)×27
1.25×2
7
10
+3
411
5
÷0.8
26×2
13
59291941
7
÷
13
+
7
÷
13
23×3
23
6.28×
7
+6.28÷2
3
63
100
×101
8.75-2
5
6
-(1
3
4
+3
1
6
) 21
3
7
÷3
2600÷(2600÷2+2600÷4)
4.4-1.6-1
2
5
9×
777
10
+3×
10
-2×
10
7
10
×9.9
11551215
5
×0.5×
5
×4.5
22
÷
11
+
25
×
16
251323754
÷6+ ÷ + ×
2 ÷ ÷
776554945
433
2.8×5.6+3.4×2 +280% 1.7× +2.3×
2.64÷7+3.36× + ÷6+ ÷ + ×
2 ÷ ÷
58877776554945
7.4+4
5
9
+2.6+5
4
9
24×(
5
12
-
3
8
+
1
6
) 0.125×2
1
2
×32
(
8
9
+
2
3
-
1
27
)×27
1.25×2
7411
10
+3
5
÷0.8
26×2
13
5
7
÷
9
13
+
2
7
÷
9
13
23×3
19
23
6.28×
4
7
+6.28÷2
1
3
63
100
×101
8.75-2
5
6
-(1
3
4
+3
1
6
) 21
3
7
÷3
2600÷(2600÷2+2600÷4)
4.4-1.6-1
2
5
9×
777
10
+3×
10
-2×
10
7
10
×9.9
11551215
5
×0.5×
5
×4.5
22
÷
11
+
25
×
16
2.8×5.6+3.4×2
4
5
+280%
1.7×
3
8
+2.3×
311
8
2.64÷7+3.36×
7
+
7
7.4+4
5
9
+2.6+5
4
9
24×(
5
12
-
3
8
+
1
6
) 0.125×2
1
2
×32
(
8
9
+
2
3
-
1
27
)×27
1.25×2
7411
10
+3
5
÷0.8
26×2
13
592
7
÷
13
+
7
÷
9
13
23×3
19
23
6.28×
4
7
+6.28÷2
1
3
63
100
×101
8.75-2
5
6
-(1
313
4
+3
6
) 21
7
÷3
2600÷(2600÷2+2600÷4)
4.4-1.6-1
2777
5
9×
10
+3×
10
-2×
10
711551215
×9.9
×0.5× ×4.5 ÷ + ×
1
1、某建筑物一层共10根工程L1梁,如图所示,计算各号钢筋下料长度,并编
制配料单。
下料长 L=5480+600+250=6330 mm
⑵②号钢筋
外包尺寸同①号钢筋6220 mm。下料长度L=6220+2×6.25×12=6370 mm
直段长:5500-2×10=5480 mm。2个弯钩长:2*6.25* d
0
=2*6.25*10=125 mm
下料长度L=5480+125=5605 mm
⑶③号钢筋
外包尺寸分段计算:
端部平直段长:240+50+500-10=780 mm;
斜段长:(500-2×25)×1.414=636 mm;
中间直段长:6220-2×(780+450)=3760 mm;
③号钢筋下料长度L=外包尺寸+两端弯钩增长值-中部弯折量度值
=2×(780+636)+3760+2×6.25d
0
-4×0.5d
0
=6592+2×6.25×20-4×0.5×20
=6592+250-40=6802 mm
端部平直段长:240+50+500-端保护层厚=240+50+500-10=780 mm
斜段长:(H梁-2*保护层厚)*1.414=(550-2*25)*1.414=707mm <
br>中间直段长:5500-2*端保护层厚-2*(端部平直长+(梁高-2*保护层
厚))=55
00-2*10-2*(780+(550-2*25))=2920 mm
2个弯钩长:2*6.25d
0
=2*6.25*20=250
mm;扣减4个中部弯曲:=-4*0.5
d
0
=-4*0.5*20=-40mm
解:(混凝土保护层厚取25mm;钢筋端部混凝土保护层取10 mm)
(1)①号钢筋
钢筋外包尺寸:6240-2×10=6220 mm。
下料长度
L=6220+2×6.25d
0
=6220+2×6.25×20=6470 mm
直段长:5500-2*10=5480 mm
2个弯折长:2*(550-200-2*保护层厚)=2*(550-200-2*25)=600
mm
2个弯钩长:2*6.25* d
0
=2*6.25*20=250 mm