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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
24×(
10
12
+
10
36
)   
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×(
10
12
+
10
36
)   
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) 4.52-0.87-7.1317.38-(3.38+2.49)4.52-0.87-7.13 24×(
10
12
+
10
36
)   
876×99+876      24×(
10
12
+
10
36
)   
10
12
+
10
36
)   
10
12
10101212
10
36
)   
10
36
10103636876×99+876       647+829-547 4.6×7.9+5.4×7.9  647+829-5474.6×7.9+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.
▼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×(
10
12
+
10
36
)   
=24×
10
12
+
10
36
×24
=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
101010121212+
10
36
)   
=24×
10
12
+
10
36
×24
=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
101010363636)   
=24×
10
12
+
10
36
×24
=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
101010121212+
10
36
×24
=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
101010363636×24
=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
222333
=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
222333

(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