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Toán Lớp 6: Tính nhanh: a) 38. 63 + 37. 38 b) 132.53 – 53. 32 c) 12 . 53 + 53 . 172 – 53 . 84 d) 35 . 34 + 35 . 86 + 6

Home/ Toán Lớp 6: Tính nhanh: a) 38. 63 + 37. 38 b) 132.53 – 53. 32 c) 12 . 53 + 53 . 172 – 53 . 84 d) 35 . 34 + 35 . 86 + 6

Toán Lớp 6: Tính nhanh: a) 38. 63 + 37. 38 b) 132.53 – 53. 32 c) 12 . 53 + 53 . 172 – 53 . 84 d) 35 . 34 + 35 . 86 + 6

Bảo Anh Tháng Chín 24, 2022 Toán học 1 Comment 0 views

Toán Lớp 6: Tính nhanh:
a) 38. 63 + 37. 38 b) 132.53 – 53. 32
c) 12 . 53 + 53 . 172 – 53 . 84 d) 35 . 34 + 35 . 86 + 65 . 75 + 65 . 45

Comments ( 1 )

behocgioitoan
24 Tháng Chín, 2022 at 10:04 sáng

Reply

$\text{a/}$

$\text{38 . 63 + 37 . 38}$

$\text{= 38 . ( 63 + 37 )}$

$\text{= 38 . 100}$

$\text{= 3800}$

$\text{b/}$

$\text{132 . 53 – 53 . 32}$

$\text{= 53 . ( 132 – 32 )}$

$\text{= 53 . 100}$

$\text{= 5300}$

$\text{c/}$

$\text{12 . 53 + 53 . 172 – 53 . 84}$

$\text{= 53 . ( 12 + 172 – 84 )}$

$\text{= 53 . ( 184 – 84 )}$

$\text{= 43 . 100}$

$\text{= 4300}$

$\text{d/}$

$\text{35 . 34 + 35 . 86 + 65 . 75 + 65 . 45}$

$\text{= 35 . ( 34 + 86 ) + 65 . ( 75 + 45 )}$

$\text{= 35 . 120 + 65 . 120}$

$\text{= 120 . ( 35 + 65 )}$

$\text{= 120 . 100}$

$\text{= 12000}$

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