Mathematics Class 7th
21. A / B + C / D = C/D + A/B
A. Associative property
B. Commutative property
C. Multiplicative property
D. None of these
22. The additive inverse of -1/2 is ____
A. ½
B. 0.5
C. -1/2
D. None of these
23. All integers are rational number
A. 0 has No reciprocal
B. 1 is the reciprocal of itself
24. When numbers are expressed in decimal form, the division process will either be terminating or non-terminating.
A. True
B. False
25. _____ decimal are decimals having a finite number of digits after the decimal.
A. Terminating
B. Non terminating
C. Repeating
D. None of these
26. 0.375 is a _____ decimal.
A. Terminating
B. Non terminating
C. Repeating
D. None of these
27. 3/8 is a _____ fraction
A. Proper
B. Improper
C. Common
D. None of these
28. 16/7 is a ____ fraction.
A. Improper
B. Proper
C. None of these
29. 2.28555555….. Is a ____ decimal.
A. None terminating
B. Terminating
C. None of these
30. 2/7 is a ____ decimal.
A. Recurring
B. Non-recurring
C. None of these
31. _____ decimal are non-terminating decimals in which a single digit or block of digits repeats itself infinite number of times.
A. Recurring
B. Non-Recurring
C. None of these
32. Round off 72.36 to the nearest tenth.
A. 73
B. 72.3
C. 72.4
D. None of these
33. Round off 72.84 to the nearest tenth.
A. 73
B. 72.9
C. 72.8
D. None of these
34. Two powers that have the same ____ add the exponents.
A. Base
B. Powers
C. None of these
35. 3^5 * 3^3 = _______
A. 3^2
B. 15^8
C. 3^15
D. 3^8
36. If the powers are same and bases are different, than ______ the bases.
A. Add
B. Multiply
C. Divide
D. None of these
37. To divide two powers that have the same base, ______ the exponents.
A. Add
B. Subtract
C. Divide
D. None of these
38. To find the power of a power, ______ the exponents.
A. Add
B. Subtract
C. Multiply
D. None of these
39. Any raised to the zero power is ____
A. 0
B. 1
C. -1
D. None of these
40. The area of circle is πr^2.
A. True
B. False