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运用简便方法计算.17.38-(3.38+2.49)4.52-0.87-7.1324×(1012+1036)876×99+876647+829-5474.6×7.9+5.4×7.98×4×12.5×2.517.7+3.9+4.3+6.1.
题目详情
运用简便方法计算.
17.38-(3.38+2.49) 4.52-0.87-7.13 17.38-(3.38+2.49) 4.52-0.87-7.13 24×(
+
) 876×99+876 24×(
+
)
+
)
10 10 12 12
)
10 10 36 36 876×99+876 647+829-547 4.6×7.9+5.4×7.9 647+829-547 4.6×7.9+5.4×7.9 8×4×12.5×2.5 17.7+3.9+4.3+6.1. 8×4×12.5×2.5 17.7+3.9+4.3+6.1.
17.38-(3.38+2.49) | 4.52-0.87-7.13 | ||||
24×(
| 876×99+876 | ||||
647+829-547 | 4.6×7.9+5.4×7.9 | ||||
8×4×12.5×2.5 | 17.7+3.9+4.3+6.1. |
17.38-(3.38+2.49) | 4.52-0.87-7.13 | ||||
24×(
| 876×99+876 | ||||
647+829-547 | 4.6×7.9+5.4×7.9 | ||||
8×4×12.5×2.5 | 17.7+3.9+4.3+6.1. |
10 |
12 |
10 |
36 |
10 |
12 |
10 |
36 |
10 |
12 |
10 |
36 |
10 |
12 |
10 |
36 |
10 |
36 |
▼优质解答
答案和解析
(1)17.38-(3.38+2.49)
=17.38-3.38-2.49
=14-2.49
=11.51
(2)4.52-0.87-7.13
=4.52-(0.87+7.13)
=4.52-8
=-3.48
(3)24×(
+
)
=24×
+
×24
=20+6
=26
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 10 1012 12 12+
)
=24×
+
×24
=20+6
=26
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 10 1036 36 36)
=24×
+
×24
=20+6
=26
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 10 1012 12 12+
×24
=20+6
=26
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 10 1036 36 36×24
=20+6
=26
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
2 2 23 3 3
=26
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
2 2 23 3 3
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
=17.38-3.38-2.49
=14-2.49
=11.51
(2)4.52-0.87-7.13
=4.52-(0.87+7.13)
=4.52-8
=-3.48
(3)24×(
10 |
12 |
10 |
36 |
=24×
10 |
12 |
10 |
36 |
=20+6
2 |
3 |
=26
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 |
12 |
10 |
36 |
=24×
10 |
12 |
10 |
36 |
=20+6
2 |
3 |
=26
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 |
36 |
=24×
10 |
12 |
10 |
36 |
=20+6
2 |
3 |
=26
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 |
12 |
10 |
36 |
=20+6
2 |
3 |
=26
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
10 |
36 |
=20+6
2 |
3 |
=26
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
2 |
3 |
=26
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
2 |
3 |
(4)876×99+876
=876×(99+1)
=876×100
=87600
(5)647+829-547
=(647-547)+829
=100+829
=929
(6)4.6×7.9+5.4×7.9
=(4.6+5.4)×7.9
=10×7.9
=79
(7)8×4×12.5×2.5
=(8×12.5)×(4×2.5)
=100×10
=1000
(8)17.7+3.9+4.3+6.1
=(17.7+4.3)+(3.9+6.1)
=22+10
=32
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