Maths Demo test for class 7

Total Question: 15

 1. Evaluate $[(-48)\div 16]\div 3$ 1 - 9 9 - 1
 2. Which has the greatest quotient? -20/-5 -20/5 20/-4 20/4
 3. The set of integers is not closed under addition subtraction multiplication division
 4. $1763\times (-2)+(-1763)\times 98=$ 1763 169248 -176300 -169248
 5. Evaluate $(-6+34)\div (-14)+2$ 4 0 2 - 1
 6. The temperature at noon at a certain place was 12 degrees above zero. If it decreases at a rate of 2 degrees per hour until midnight, at what time would it be 10 degrees below zero? 2 p.m. 11 p.m. 12 midnight 10 p.m.
 7. Ratio of: $(-2-5)\times(-6)$  to   $(-2)+(-5)\times(-6).$ is 3 / 2 2 / 3 1 / 2 3 / 4
 8. Which of the following expressions are equal to -20? 1. $-4\times 5$ 2. $-32 + 10 - (-2)$  3. $-6\times 2[-2\times-4]$ 4. $5\times (-2)+(-3)\times4$ 1 only 1 and 2 1, 2 and 3 1, 2, 3 and 4
 9. A certain freezing process requires that room temperature be lowered from $\dpi{100} \small 40^\circ$C at the rate of $\dpi{100} \small 5^\circ$C every hour. What will be the room temperature 10 hours after the process begins? $\dpi{100} \small -10^\circ c$ $\dpi{100} \small 10^\circ c$ $\dpi{100} \small 20^\circ c$ $\dpi{100} \small -5^\circ c$
 10. Which of the following on simplification is not negative? $-8(-4)+5$ $7+(-11)-5$ $-4-2+(-8)$ $-10-2(-2)+4$
 11. In a quiz, positive marks were given for correct answers and negative marks for incorrect answers. If Rashid’s scores in six successive rounds were 30, 10,-12,-5, -15,-20, what is his total score at the end? -12 8 -8 12
 12. What will be the product of (-5) × (6) × (-7) × (-20) 4200 410 -4200 4100
 13. Simplify: $\frac{2}{3}X 24 X 235$ 3670 3760 3600 3770
 14. $7049\div (-7049)$ 1 -1 0 2
 15. Using properties of integers, find the value of 20935 $\times$ 99 - (-20935) 2000000 20935 2093500 8850