Question

completeaza numarul potrivit in casuta fara a efectua calculul : 24536+345=345+ b) Grupeaza pentru a calcula rapid si calculeaza 27330+250000+250000 C) Grupeaza convenabil si calculeaza 135000+23000+265000+27000

Answer 1

24536+345=345+ vezi ca 345 se repeta deci adaugi 24536
24536+345=345+24536

27330+250000+250000 = 27330+(250000+250000)= 27330 + 500000=527330

135000+23000+265000+27000= 135000+265000+23000+27000=400000+50000=450000

Answer 2

24536+345=345+24536

b)27330+250000+250000=27330+500000=527330
c)135000+23000+265000+27000=135000+265000+23000+27000=
                                                             =400000+50000=
                                                                     =450000