Evaluate each of the following expressions.
Problem 1 :
12 x 4
Problem 2 :
13 x 6
Problem 3 :
15 x 8
Problem 4 :
19 x 5
Problem 5 :
18 x 9
Problem 6 :
24 x 7
Problem 7 :
28 x 5
Problem 8 :
37 x 8
Problem 9 :
51 x 8
Problem 10 :
79 x 3
Problem 11 :
82 x 7
Problem 12 :
57 x 9
Problem 13 :
69 x 9
Problem 14 :
89 x 9
Problem 15 :
98 x 9
1. Answer :
= 12 x 4
= (10 + 2) x 4
= 10 x 4 + 2 x 4
= 40 + 8
= 48
2. Answer :
= 13 x 6
= (10 + 3) x 6
= 10 x 6 + 3 x 6
= 60 + 18
= 78
3. Answer :
= 15 x 8
= (10 + 5) x 8
= 10 x 8 + 5 x 8
= 80 + 40
= 120
4. Answer :
= 19 x 5
= (20 - 1) x 5
= 20 x 5 - 1 x 5
= 100 - 5
= 95
5. Answer :
= 18 x 9
= (20 - 2) x 9
= 20 x 9 - 2 x 9
= 180 - 18
= 162
6. Answer :
= 24 x 7
= (20 + 4) x 7
= 20 x 7 + 4 x 7
= 140 + 28
= 168
7. Answer :
= 28 x 5
= (30 - 2) x 5
= 30 x 5 - 2 x 5
= 150 - 10
= 140
8. Answer :
= 37 x 8
= (30 + 7) x 8
= 30 x 8 + 7 x 8
= 240 + 56
= 296
9. Answer :
= 51 x 8
= (50 + 1) x 8
= 50 x 8 + 1 x 8
= 400 + 8
= 408
10. Answer :
= 79 x 3
= (80 - 1) x 3
= 80 x 3 - 1 x 3
= 240 - 3
= 237
11. Answer :
= 82 x 7
= (80 + 2) x 7
= 80 x 7 + 2 x 7
= 560 + 14
= 574
12. Answer :
= 57 x 9
= (50 + 7) x 9
= 50 x 9 + 7 x 9
= 450 + 63
= 513
13. Answer :
= 69 x 9
= (70 - 1) x 9
= 70 x 9 - 1 x 9
= 630 - 9
= 621
14. Answer :
= 89 x 9
= (90 - 1) x 9
= 90 x 9 - 1 x 9
= 810 - 9
= 801
15. Answer :
= 98 x 9
= (100 - 2) x 9
= 100 x 9 - 2 x 9
= 900 - 18
= 882
Kindly mail your feedback to v4formath@gmail.com
We always appreciate your feedback.
©All rights reserved. onlinemath4all.com
Aug 31, 24 06:59 PM
Aug 31, 24 06:48 PM
Aug 31, 24 07:14 AM