Question

4. Efectuează grupând convenabil termenii.
+ 1 504
340 +62 + 160 + 38
500 100
a) 4000 + 800 + 1200 + 1000 c) 5700 + 1600 + 1300 + 1400
b) 2400 + 480 + 600 + 20 d) 3500 + 3300 + 1500 + 1700
600​

Answer 1

a) (4000+1000)+(800+1200)=

= 5000+2000=

=7000

b) (2400+600)+(480+20)=

= 3000+500=

=3500

c) (5700+1300)+(1600+1400)=

=7000+3000=

=10000

d) (3500+1500)+(3300+1700)=

=5000+5000=

=10000