5 tens is _____ 60, 3 tens is ______ 30, 45 is _______ 4 tens, 2 tens = ___ + 10, 3 tens = ____ + 29, 12 tens _______ 100, 2 tens + 2 tens ______ 40, 2 tens + 2 tens = 10 + 10 + 10 + ______, 4 tens 2 ones _______ 41, 5 tens 6 ones ________ 506

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