ehild said:
To sum 4-digit numbers with 1,2,3,4, you simply add each digit in the same place value together. For example, if you have the numbers 1234 and 4321, you would add 1+4, 2+3, 3+2, and 4+1 to get the sum of 5555.
Of course. Let's say we have the numbers 1432 and 3214. We would add 1+3, 4+2, 3+1, and 2+4 to get the sum of 4646.
No, there is no specific order in which the numbers should be added. You can add them in any order and the result will be the same.
Yes, you can sum more than two 4-digit numbers with 1,2,3,4. The method is the same - add each digit in the same place value together. For example, if you have the numbers 1234, 4321, and 2468, you would add 1+4+2, 2+3+4, 3+2+6, and 4+1+8 to get the sum of 8634.
Yes, this method can be used for summing numbers with any number of digits. You simply add each digit in the same place value together. For example, if you have the numbers 12, 345, and 6789, you would add 1+3+6, 2+4+7, and 5+8+9 to get the sum of 33, 47, and 22, which would then be added together to get the final sum of 102.