1. a). 5/10
b). 3/12
c). 2/4
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2). vapoare =8
8:2=4 ( in patru zile.au plecat vapoarele )
8-2-2-2-2=0
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3). a). 72:8=9
72:9=8
b). 30:5=6
30:6=5
c). 28:4=7
28:7=4
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4.) 4×5=20
20:5=4
8×3=24
24:3=8
6×9=54
54:9=6
7×5=35
35:5=7
8×4=32
32:4=8
9×5=45
45:5=9
9×7=63
63:7=9
8×6=48
48:6=8
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5). 21:3=7
21-3-3-3-3-3-3-3=0
7×3=21
36:4=9
36-4-4-4-4-4-4-4-4-4=0
9×4=36
42:6=7
42-6-6-6-6-6-6-6=0
7×6=42
49:7=7
49-7-7-7-7-7-7-7=0
7×7=49
63:7=9
63-7-7-7-7-7-7-7-7-7=0
9×7=63
56:8=7
56-8-8-8-8-8-8-8=0
7×8=56
81:9=9
81-9-9-9-9-9-9-9-9-9=0
9×9=81
la d) cea cu 54 nu se mai vede in poza.
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6.) Câte lamai sunt in al doilea pom ?
20:4=5 lamai( are al doilea lamâi )
20-4-4-4-4-4=0
