0
21
1 + 2 + 5 + 9
1 + 2 + 6 + 8
1 + 3 + 4 + 9
1 + 3 + 5 + 8
1 + 3 + 6 + 7
1 + 4 + 5 + 7
2 + 3 + 4 + 8
2 + 3 + 5 + 7
2 + 4 + 5 + 6
The 4 single digit sums are:
10 1234
11 1235
12 1236 1245
13 1237 1246 1345
14 1238 1247 1256 1346 2345
15 1239 1248 1257 1347 1356 2346
16 1249 1258 1267 1348 1357 1456 2347 2356
17 1259 1268 1349 1358 1367 1457 2348 2357 2456
18 1269 1278 1359 1368 1458 1467 2349 2358 2367 2457 3456
19 1279 1369 1378 1459 1468 1567 2359 2368 2458 2467 3457
20 1289 1379 1469 1478 1568 2369 2378 2459 2468 2567 3458 3467
21 1389 1479 1569 1578 2379 2469 2478 2568 3459 3468 3567
22 1489 1579 1678 2389 2479 2569 2578 3469 3478 3568 4567
23 1589 1679 2489 2579 2678 3479 3569 3578 4568
24 1689 2589 2679 3489 3579 3678 4569 4578
25 1789 2689 3589 3679 4579 4678
26 2789 3689 4589 4679 5678
27 3789 4689 5679
28 4789 5689
29 5789
30 6789
[Each line starts with the sum and combinations of 4 digits that should be added, for example 28 4789 5689 means that 4+7+8+9 and 5+6+8+9 sum to 29.]
Add your answer:
Earn +20 pts
What 4 single digit numbers add up to 24?
28
How many two-digit numbers have digits that add up to 10?
To make the list of two-digit numbers with digits that add up to 10, first write the pairs of single-digit integers that add up to 10. They are (1,9), (2,8), (3,7), (4,6), (5,5). Then recognize that each of these pairs of numbers, except 5, can be combined in two different ways to make two-digit numbers that satisfy the problem. 19 and 91 28 and 82 37 and 73 46 and 64 55 So there are nine two-digit numbers with digits that add up to 10.
How can estimating help you add two digit of number?
It is easier to simply add two one-digit numbers than to mess about with estimation!
What is the sign for multiplication and addition?
If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.
How do you add 3 digit numbers?
From right to left.
What 4 single digit numbers add up to 24?
28
How many three digit numbers add up to 17?
An infinite number if you can use positive and negative numbers.
How many two-digit numbers have digits that add up to 10?
To make the list of two-digit numbers with digits that add up to 10, first write the pairs of single-digit integers that add up to 10. They are (1,9), (2,8), (3,7), (4,6), (5,5). Then recognize that each of these pairs of numbers, except 5, can be combined in two different ways to make two-digit numbers that satisfy the problem. 19 and 91 28 and 82 37 and 73 46 and 64 55 So there are nine two-digit numbers with digits that add up to 10.
How do you add a 3 digit number and a two digit number?
You line up the last numbers and then add it!
Can you get 1000 as an answer when you add up eight similar single digit numbers?
No. The largest value you can get from adding eight 1-digit numbers is 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 8*9 = 72
What kind of numbers do you add together to get a larger number positive or negative?
positive numbers
How do you divide a number by by a two digit number?
To divide a single digit number by a double digit number,you first have to understand its obviously isn't easy. The following should help: *Put a zero on the area of the quotient and add a decimal point next to it. * After doing this,divide as if both numbers were two digit numbers and proceed You should get the answer.
I am two digit number. The sum of my digits equals 18. Who am I?
The only two single digit numbers that add up to 18 are 9 and 9. 9x9=18 18/9=9 therefore the answer is 9
How do you multiply by two-digit numbers?
To multiply two digit numbers, multiply each place value of a factor by each place value digit and add the results.
How can estimating help you add two digit of number?
It is easier to simply add two one-digit numbers than to mess about with estimation!
What is the greatest possible sum of two 4 digit numbers?
Add the two greatest possible four digit numbers. 9999 + 9999
What is the sign for multiplication and addition?
If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.If you multiply two numbers, the result will be positive, if both factors are positive, or if both are negative. Multiplying a positive number by a negative number, or a negative number by a positive number, results in a negative result.For addition, if you add two positive numbers, the result is positive. If you add two negative numbers, the result is negative. If you add a positive and a negative number, the result depends on which of the numbers has the greater absolute value. For example, if the positive number has the greater absolute value (distance from zero), the result will be positive.
