what should u do if a place value is missing a number
these are the answers, you don't have to trust me but if you don't, it's your fault :(
1:21
2:(8-9-8) + (- 4/9 + 7/9)
3:add a zero
4:-23.1
5:-220.857
trust him
trust him he is right i got them all right but just in case yall want to be sure
1.- What is 12815 − 7 + 715 + 15
? Simplify your answer
answer: 21
2.- How should you group the following expression to make it easiest to add? 18 − 949 + 79 − 8
answer: (18 − 9 − 8) + (−49 + 79)
3.-What should you do if a place value is missing a number?
answer: Add a zero.
4.-What is −18.1−5
answer: -23.1(in case yall think oh what if it was an accident that they put the minues there its NOT an accident)
5.-What is −189.987−30.87
answer: -220.857
If a place value is missing a number, there are a few steps you can follow to determine the missing number:
1. Identify the place value: Determine which place value is missing the number. For example, if the number is 3025 and the tens place is missing, you need to find the missing digit at the tens position.
2. Use context clues: Look at the numbers around the missing place value and try to determine any patterns or clues that can help you find the missing number. For example, if the numbers before and after the missing place value are 30 and 40, respectively, you can infer that the missing tens digit would be 3.
3. Trial and error: If there are no obvious patterns or clues, you can use trial and error to substitute different numbers within the missing place value until the given number makes sense. For example, if the missing place value is in the thousands position, you can try different digits (0-9) in that position and see which value fits well with the rest of the number.
4. Verify the answer: Once you have determined the missing number, reinsert it into the original number and check if it makes sense within the given context.
Remember, the approach can vary depending on the specific problem, but these steps should provide you with a starting point to solve for the missing number in a place value.