Question

Efectuea grupand convenabil termenii:
a) 11+123 +89.
b) 25+ 35-40+55 65
c) 23 +78 +27 +22;
d) 296 +25 +4 +95
e) 50 - 75+ 100+ 125 + 150; 1) 3 500 + 892 +4 500 + 108.​

Answer 1

a) 11+123+89=223 b) 25+35-40+55+65=

(89+11) + 123 (65+35) + (25+55) - 40

100 + 123 100 + 80 - 40

223 180-40 = 140

c) 23 + 78 + 27 + 22= 150 d) 296 +25+4+95=

(22+78) + (27+23) (296+4) + (95+25)

100 + 50 300 + 120

150 420

e) 3500 + 892 + 4500 + 108=

(3500+4500) + (892+108)

8000 + 1000

9000

f) 50-75+100+125+150=

(125+75) + ( 150 + 50 ) - 100

200 + 200 - 100

300

Succes!