42.99-21.176-35.12
Thực hiện các phép tính sau:
a)42.99-21.176-35.12 ;
b)73.25+27.25-720 ;
c)11^25;11^23-3^5 ; (1^10 + 2^3)+2^2.3^0.5
35.12+65.13
\(35\cdot12+65\cdot13\)
\(=35\cdot12+65\left(12+1\right)\)
\(=35\cdot12+65\cdot12+65\)
\(=\left(65+35\right)\cdot12+65\)
\(=100\cdot12+65\)
\(=1200+65\)
\(=1265\)
35.12+65.13
35.12 + 65.13 = 35.12 + 65.12 + 65
= 12(35+65) + 65
= 12.100 +65
= 1265
35.12+65.3 = ?
35.12+65.13
tính nhanh 35.12+65.13
35.12+65.13
=35.12+65.(12+1)
=35.12+65.12+6
=(35+65).12+65
=100.12+65
=1200+65
=1265
giai gium minh cai
35.12 + 65.13
35.12+65.13
=35.12+65.12+65
=(35+65).12+65
=100.12+65
=1200+65
=1265
Tính nhanh
35.12+65.13
53.39+39.47-53.21-47.21
35*12+65*13=420+845=1265
53*39+39*47-53*21-47*21=1800
35.12+65.13(câu này tính nhanh theo cach lớp 6 nhé các bạn)
= 35.12 + 65.12 + 65
= 12.(35 + 65) + 65
= 12. 100 + 65
= 1200 + 65
= 1265
tick đúng nhé !
Bài làm :
\(35.12+65.13\)
\(=35.12+65.\left(12+1\right)\)
\(=35.12+65.12+65\)
\(=\left(35+65\right).12+65\)
\(=100.12+65\)
\(=1200+65\)
\(=1265\)
Học tốt