So 3 x ? = 18. Use the inverse operation to work out the missing value. 18 ÷ 3 = ? Let’s share 18 counters into three groups to help. The missing value is 6. They both have the same answer!
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Cleaning is not allowed (see Rule 4.2c(1)). To Identify It. Cleaning is allowed only as needed to identify it (see Rule 7.3). Because It Interferes with Play. Cleaning is not allowed (see Rule 15.3b(2 ...