1. Which of the following is closest to zero?
A $6+5+4$
B $6+5-4$
C $6+5 \times 4$
D $6-5 \times 4$
E $6 \times 5 \div 4$
1. B The values of the expressions are: A $15, \mathrm{~B} 7, \mathrm{C} 26, \mathrm{D}-14, \mathrm{E} 7 \frac{1}{2}$. Of these, 7 is closest to 0 .