Question

grupeaza convenabil factorii,pentru a calcula mai rapid.a)5×6×2=....×...=.;4×9×2=..×...=..;8×5×2=..×...=... b) 3×5×3=..×...=... ; 1×9×2=...×...=...; 2×8×3=...×...=...​

Answer 1

a)5x6x2=10x6=60

  4x9x2=8x9=72

  8x5x2=8x10=80

b)3x5x3=9x5=45

  1x9x2=2x9=18

  2x8x3=6x8=48

Answer 2

5×6×2=10×6=60

4×9×2=8×9=72

8×5×2=10×8=80

3×5×3=9×5=45

1×9×2=2×9=18

2×8×3=6×8=48