Question

calculează după model :7×20=7×2×10=14×10=140 2×60= 3×90= 8×50= 9×70= 7× 500= 8×600=

Answer 1

2x60=2x6x10=12x10=120
3x90=3x9x10=27x10=270
8x50=8x5x10=40x10=400
9x70=9x7x10=63x10=630
7x500=7x5x100=35x100=3500
8x600=8x6x100=48x100=4800

Answer 2

7×20=7×2×10=14×10=140 (Model)


2×60=2×6×10=12×10=120


3×90=3×9×10=27×10=270


8×50= 8×5×10=40×10=400

9×70= 9×7×10=63×10=630

7× 500= 7×5×100=35×100=3500

8×600=8×6×100=48×100=4800