(1) | 47+36 |
(2) | 3/7+(3/5+2/5) |
(3) | 2.3x6.1 |
(4) | (2.5x4)x(12.5x8) |
(5) | 3/5x(19/25+6/25) |
-(74+26) |
-b-c |
÷2÷5 |
bxc |
x(201-1) |
axb-axc |
=300-105
=195
|
=3.6÷(7.2-6)
=3.6÷1.2
=3
|
=21÷(5/15+6/15)÷9/11
=21÷11/15÷9/11
=21x15/11x11/9
= 35
|
=(3.1+1.9)+(2.4+3.6)
=5+6
=11
|
=9.7x(1.25x0.8)
=9.7x1
=9.7
|
=7/9x5/11+5/11x2/9
=5/11x(7/9+2/9)
=5/11x1
=5/11
|