MULTIPLICATION. 39
the 7, and reserve the 3 tens for the tens' column. We then multiply the 7 tens by 7, obtaining 49 tens, and adding the 3 tens which were reserved, we have 52 tens, or 5 hundreds and 2 tens. Writing down the 2 tens, and reserving the 5 hundreds, we multiply the 1 hundred by 7; and, adding the reserved 5 hundreds, we have 12 hundreds, which we write down in full; and the product is 1225.
EXAMPLES FOR PRACTICE.
(3) Multiply By 8756 4567 (4) 7896 Ans. 35024 13701 39480 56807 (6) 47893 (7) 61657 89765 284035 287358 431599 807885
9. Multiply 767853 by 9. Ans. 6910677.
10. Multiply 876538765 by 8. Ans. 7012310120.
11. Multiply 7654328 by 7. Ans. 53580296.
12. Multiply 4976387 by 5. Ans. 24881935.
13. Multiply 8765448 by 12. Ans. 105185376.
14. Multiply 456 7839 by 11. Ans. 50246229.
15. What is the cost of 8675 barrels of flour at 7 dollars per barrel?
Ans. 60725 dollars.
16. What is the cost of 25384 tons of hay at 9 dollars per ton?
Ans. 228456 dollars.
17. If on 1 page in this book there are 2538 letters, how many are there on 11 pages? Ans. 27918 letters.
§ 36. When the multiplier exceeds 12, proceed thus:
1. Let it be required to multiply 763 by 24.
Ans. 18312.
