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  Number & Math Play

Super Sevens
 
Q For each of the seven rows, insert the mathematical symbols (+, -, ÷, ×) that will make the equation correct for someone calculating from left to right. Here's an example with the symbols already inserted:

7 × 7 - 7 ÷ 7 = 6

7 7 7 7 = 9
7 7 7 7 = 15
7 7 7 7 = 56
7 7 7 7 = 63
7 7 7 7 = 91
7 7 7 7 = 147
7 7 7 7 = 294


 
A 7 + 7 ÷ 7 + 7 = 9
7 ÷ 7 + 7 + 7 = 15
7 ÷ 7 + 7 × 7 = 56
7 × 7 + 7 + 7 = 63
7 + 7 × 7 - 7 = 91
7 + 7 + 7 × 7 = 147
7 × 7 - 7 × 7 = 294

Source: Will Shortz'sBest Brain Busters,p. 97 (and other sources)