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When we add three numbers, we can first add any two of them. 8 + 6 + 7 = 14 + 7. Now, can you find the missing number? 4 + 7 + 5 = ＿ + 5
When we add three numbers, we can first add any two of them. Eight plus six plus seven equals 14 plus seven. Now can you find the missing number? Four plus seven plus five equals what plus five.
To find the missing number, we need to add together four and seven. Four and seven is 11. The missing number is 11. Four plus seven plus five is equal to 11 plus five. We can add the four and seven together first to make 11 and then add five.
The missing number is 11.