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Question 1: 46 × 44?
A. 2026
B. 2084
C. 2042
D. 2024
Correct Answer is Option (D).
 To calculate 46 × 44,
 Multiply the unit’s digits = 6 × 4 = 24
 Then multiply 4, which is the tenth’s digit with 5 i.e. (1 + 4) = 20
 Therefore, the answer is 2024.
Question 2: Find the square of 89
A. 8021
B. 7821
C. 8121
D. 7921
Correct Answer is Option (D).
 (89)^{2} = 8^{2}2 × 8 × 99^{2} = 81 (carry 14)4 (carry 8)1 = 7921
Question 3: Find the square of 107
A. 11449
B. 11249
C. 11439
D. 11349
Correct Answer is Option (A).
 107 is 7 more than the base 100, 7^{2} is 49. Then the left side is 107 + 7 = 114. Thus, the square becomes 11449
Question 4: 43 × 34
A. 1562
B. 1262
C. 1462
D. 1264
Correct Answer is Option (C).
 43 × 34 = 4 × 34 × 4 + 3 × 33 × 4
= 12 (carry 2)5 (carry 1) 2 = 1462
Question 5: 37 × 73
A. 2901
B. 2801
C. 2701
D. 2781
Correct Answer is Option (C).
 37 × 73 = 3 × 73 × 3 + 7 × 77 × 3
= 21 (carry 5)8 (Carry 2)1 = 2701
Question 6: 82 × 71
A. 5922
B. 5022
C. 5822
D. 1422
Correct Answer is Option (C).
82 x 71 is calculated as:
 Step 1: 2 × 1 = 2 (Write 2 as last digit)
 Step 2: 1 × 8 + 2 × 7 = 22 (Write 2 and 2 is carried over to the next step)
 Step 3: 8 × 7= 56. Therefore, 5822 is the correct answer.
Question 7: 976 × 653
A. 637328
B. 647358
C. 876458
D. 983458
Correct Answer is Option (A).
976 × 653 is calculated as:
 Step 1: 6 × 3 = 18 (Write 8 as the last digit and 1 is carried over to the next step)
 Step 2: 7 × 3 + 6 × 5 + 1(Carried Over) = 52 (Write 2 and 5 is carried over to the next step)
 Step 3: 9 × 3 + 6 × 6 + 7 × 5 + 5 (Carried Over) = 98 (Write 8 and 9 is carried over to the next step)
 Step 4: 9 × 5 + 7 × 6 + 9(Carried Over) = 96 (Write 6 and 9 is carried over to the next step)
 Step 5: 9 × 6 + 9 (Carried Over) = 63 (Write 39). Therefore, 637328 is the answer.
Question 8: 107 × 93
A. 8971
B. 9951
C. 9451
D. 7581
Correct Answer is Option (B).
107 x 93 is calculated as:
 Step 1: 107 100 = 7, 93100= 7
 Step 2: 7 × 7 = 49, 100 49 =51(last two digits)
 Step 3: 1077= 93+7 = 100 1 (borrowed) =99
 Therefore, the answer is 9951
Question 9: 109 × 96
A. 10264
B. 10464
C. 10864
D. 10364
Correct Answer is Option (B).
109 X 96 is calculated as:
 Step 1: 109 100 = 9, 96100= 4
 Step 2: 9 × 4 = 36, 100 36 =64(last two digits)
 Step 3: 1094= 96+9 = 105 1 (borrowed) =104
 Therefore, the answer is 10464.
Question 10: Find the square of 97
A. 8109
B. 9809
C. 9409
D. 9209
Correct Answer is Option (C).
 97 is 3 less than the base 100. While squaring 97, the right side will be (3)^{2} i.e. 09. And the left side would be the ‘number given – difference’ i.e. 97 – 3 = 94.
 So, the square of 97 is 9409.
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