Question

a)Calculeaza suma numerelor,folosind descompunerea lor.
32.485+25.437
43.252+21.764
123.675+454.867
234.543+234.543
125.432+26.574
54.326+125.437 b)Luca a verificat cu ajutorul calculatorului,apasand urmatoarele taste:ON 3 2 4 8 5 + 2 5 4 3 7 = 579922
Verifica si tu rezultatele cu ajutorul calculatorului.

Answer 1

32.485 + 25.437 =

30000 + 20000 = 50000

2000 + 5000 = 7000

400 + 400 = 800

85 + 37 = 122

total : 50000 + 7000 + 800 + 122 = 57922

43.252+21.764=

40000+20000=60000

3000+1000=4000

200 + 700 = 900

    52 + 64 = 116

60000 + 4000 + 900 + 116= 64000 +  1016 = 65016

123.675+454.867

100000+400000=500000

20000+50000=70000

3000+4000=7000

600+800=1400

75+67=142

500000+70000+7000+1400+142=578542

234.543+234.543=

200000+200000=400000

30000+30000=60000

4000+4000=8000

500+500=1000

43+43=86

400000+60000+8000+1000+86=469086

125.432+26.574

100000

20000+20000 =

5000+6000=11000

400+500=900

32+74=106

100000+40000+11000+900+106=152006

54.326+125.437

=(0+100.000)+(50.000+20.000)+(4000+5000)+(300+400)+(26+37)

=100000+70000+9000+700+63

=179763