Four. (100 x 10 = 1,000)
If two numbers have m and n significant digits, respectively, then then product can have at most m+n. However, the normally it is the minimum of m and n.
17 multiplied by 13 is equal to 221. This can be calculated by multiplying the units digits of the numbers (7 and 3) to get 21, and then adding the product of the tens digits (1 and 1) to get 22. Therefore, the result is 221.
Mutilply the values of the digits.
The product of 15 multiplied by 22 is 330. This can be calculated by multiplying the tens digits first (1 x 2 = 2) to get the tens place value, and then multiplying the ones digits (5 x 2 = 10) to get the ones place value. Combining these results (20 for the tens place and 10 for the ones place) gives us the final answer of 330.
88
63
61 is prime. You cannot make 61 by multiplying four digits.
When multiplying by ten the digits shift to the left
If two decimal numbers have x and y digits after the decimal point respectively, then their product has (x + y) digits after the decimal point.
If two numbers have m and n significant digits, respectively, then then product can have at most m+n. However, the normally it is the minimum of m and n.
Because the number of digits after the decimal place in a product does not require that.
If the two multiplicands have X and Y digits after the decimal place then their product (before removing any trailing 0s) has (X+Y) digits after the decimal point.
44. Also works for 36, 63.
Yes.
17 multiplied by 13 is equal to 221. This can be calculated by multiplying the units digits of the numbers (7 and 3) to get 21, and then adding the product of the tens digits (1 and 1) to get 22. Therefore, the result is 221.
Mutilply the values of the digits.
Multiplying a 2-digit number by a 1-digit number involves multiplying the digits in the ones and tens place and then adding the products. Similarly, multiplying a 3-digit number by a 1-digit number follows the same principle, where you multiply the digits in the ones, tens, and hundreds place and then add the products. The main difference is that in the latter case, you are dealing with three sets of digits to multiply and add, whereas in the former, you only have two sets of digits.