Question

calculeaza rapid grupand covenabil termenii: a)372+51+4000+49+428 b) 33+6+6000+445+67+555+4 c)42+9+3000+58+91+638+362+5

Answer 1

a)372+51+4000+49+428 =
51+49 + 372+428 + 4000 =
100 + 800 + 4000 = 4900

b) 33+6+6000+445+67+555+4 =
33+67 + 6+4 + 6000 + 445+555 = 
100 + 10 + 6000 + 1000 = 7110

c)42+9+3000+58+91+638+362+5 = 
42 + 58 + 9 + 91 + 3000 + 638 +362 + 5=
100 + 100 + 3000 + 1000 + 5 = 4205 

Answer 2

a)372+51+4000+49+428 =
= 372 + 428 + 51 + 49 + 4000 =
= 800 + 100 + 4000 =
= 4 900

b) 33+6+6000+445+67+555+4 =
= 33 + 67 + 6+ 4 + 445 + 555 + 6000 =
= 100 + 10 + 1000 + 6000 =
= 7 110

c)42+9+3000+58+91+638+362+5 =
= 42 + 58 + 9+91 + 638+362 + 3000 + 5 =
= 100 + 100 + 1000 + 3000 + 5 =
= 4000 + 205 =
= 4 205