Correct: 3 x 10 =30, 20 x 10 = 200, 3 x 1000 =3000, 60 x 10 = 600, 80 x 100 = 8000, 9 x 10 = 90, 90 x 100 = 9000, 30 x 10 = 300, 50 x 10 = 500, 7 x 10 =70, 70 x 100 = 7000, 1 x 10 = 10, 10 x 10 = 100, 10 x 100 = 1000, Incorrect: 3 x 10 =300, 2 x 1=20, 2 x 100 =2000, 60 x 100 = 600, 8 x 10 = 800, 9 x 100 = 9000, 90 x 10 = 9000, 40 x 100 = 400, 5 x 10 = 500, 7 x 10 = 7, 70 x 10 = 70, 1 x 10= 100, 10 x 100=100, 10 x 10 = 10,

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