Thực hiện phép tính
A,64*52+37*52-2*26. B,16,88+9,76+3,12
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Bài 1:
\(a.8,32+14,76+5,24=8,32+\left(14,76+5,24\right)\)
\(=8,32+20=28,32\)
\(b,16,88+9,76+3,12=\left(16,88+3,12\right)+9,76\)
\(=20+9,76=29,76\)
\(c,\left(\dfrac{2}{5}+\dfrac{7}{9}\right)+\dfrac{3}{5}=\left(\dfrac{2}{5}+\dfrac{3}{5}\right)+\dfrac{7}{9}\)
\(=1+\dfrac{7}{9}=\dfrac{16}{9}\)
\(d,\dfrac{19}{11}+\left(\dfrac{8}{13}+\dfrac{3}{11}\right)\)
\(=\left(\dfrac{19}{11}+\dfrac{3}{11}\right)+\dfrac{8}{13}=\dfrac{22}{11}+\dfrac{8}{13}\)
\(=2+\dfrac{8}{13}=\dfrac{34}{13}\)
16,88 + 9,76 + 3,12
= (16,88 + 3,12) + 9,76
= 20 + 9,76
= 29,76
64 . 52 + 37 . 52 - 2 . 26
= 64 . 52 + 37 . 52 - 52
=52 (64+37-1)
=52.100
=5200
a)=9*3-26
=27-26
=1
b)=125*100-25*100
=12500-2500
=10000
64 X 52 + 37 X 52 - 2 X 26
= 64 X 52 + 37 X 52 - 52
= 52 X ( 64 + 37 - 1)
= 52 X 100
= 5200
64 x 52 + 37 x 52 - 2 x 26
=64 x 52 + 37 x 52 - 52 x 1
=52 x ( 64 + 37 -1 )
=52 x 100
=5200
tk nhé
B1:
a) = (8/15 + 7/15) + (7/4 + 5/4)
= 15/15 + 12/4
= 1 + 3
= 4
b) = (16,88 + 3/12) + 9,76
= 20 + 9,76
= 29,76
c) = (17,16 + 82,84) + 72,84
= 100 + 72,84
= 172,84
B2:
2/3 + 4/5 = 10/15 + 12/15 = 22/15
a) \(\frac{8}{15}+\frac{7}{4}+\frac{7}{15}+\frac{5}{4}\)
\(=\left(\frac{8}{15}+\frac{7}{15}\right)+\left(\frac{7}{4}+\frac{5}{4}\right)\)
\(=\frac{15}{15}+\frac{12}{4}\)
\(=1+3=4\)
b) \(16,88+9,76+3,12\)
\(=\left(16,88+3,12\right)+9,76\)
\(=20+9,76=29,76\)
c) \(72,84+17,16+82,84\)
\(=\left(82,84+17,16\right)+72,84\)
\(=100+72,84=172,84\)
\(\frac{2}{3}+\frac{4}{5}=\frac{10}{15}+\frac{12}{15}=\frac{22}{15}\)
A. 64 x 52 + 37 x 52 - 2 x 26
A = 64 x 52 + 37 x 52 - 1 x 52
A = 52 x ( 64 + 37 - 1 )
A = 52 x 100
A = 5200
B. 16,88 + 9,76 + 3,12
B = ( 16,88 + 3,12 ) + 9,76
B = 20 + 9,76
B = 29,76