Question

Simplificação das expressões numericas :
a)9+3.2
b)8.7-18
c)6.12+6.8
d)9.15-6.15
e)8.3-20+4.2
f)100-3.24
g)256-2.72-2.36
h)9.7-7.9+1
i)40.8:2

Answer 1

a)9+6=15
b)56-18=38
c)72+48=120
d)135-90=45
e)24-20+8=12
f)100-72=28
G)256-144-72=40
h)63-63+1=1
i)40.4=160

Answer 2

a)
= 9 + 3.2
= 9 + 6
= 15

*********************
b)
= 8.7-18
= 56 - 18
= 38
************************
c)
= 6.12 + 6.8
= 72 + 48
= 120

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
= 9.15 - 6.15
= 135 - 90
= 45

*******************************
e)

= 8.3 - 20 + 4.2
= 24 - 20 + 8
= 4 + 8
= 12

********************
f)
= 100 - 3.24
= 100 -72
= 28

**************************
g)
= 256-2.72-2.36
= 256 - 144 - 32
= 256 - 216
= 40

***************************
h)
= 9.7 - 7.9 + 1
= 63 - 63 + 1
= 0 + 1
= 1
***************************
i)
= 40.8:2
= 40.4
= 160

*****************************