Ok so we have a math test 2marrow, and we are doing a review. Please tell me which problems are wrong. DO NOT give me the answer. Just say, number so and so is wrong, do it over. Thanks!
19) 125 + (-75) = 50 .................. 20) -66 + (-119) = -185
21) -46 + 38 =-8 ............. 22) -54 + 21= -33 .............. 23) 20+16+ (-5) + 6 = 37
24) -14 +37 + (-72) + 8 = -1................... 25) 52 + (-78) + 8 = -18
26) 28 + (-50) + 12 + (-15) = -25 ....................... 27) 45 - (-63) = -18
28) -58 - 34 = -24 ........................ 29) -76 - (-56) = -132
30) -16 - 24 = 8
any wrong? what number. I will check after i get out of the shower....then i will repost the 2nd part of the test for yall to check! :) thanks
ps: the dots (periods) are just to show the spaces between each problem!
2006-09-19 15:17:49 · 11 answers · asked by maddy 3 in Education & Reference ➔ Homework Help
i cant use a calculater bc mine doesnt do negatives!!!!
2006-09-19 15:21:36 · update #1
You started off really well. These numbers are incorrect: 24, 27, 28, 29, 30. I think your problems are with the double negatives--i.e. 14-(-32)--when you are subtracting a negative number, the two negatives cancel each other out and mean to add.
For example: 14-(-32)=14+32=46.
Thanks for wanting to do your own work and taking responsibility for your learning. As a teacher, I love to see students do that! I hope I didn't give you too much info. Good luck.
2006-09-19 15:27:43 · answer #1 · answered by killingwish 4 · 1⤊ 0⤋
Hmm... they all look pretty good, I think # 24 is wrong, #27 is wrong, #28 is wrong, #29 is wrong, and #30 is wrong. A note- two negative signs in a row make a positive (disregard the parentheses aorund the number), and subtracting a negative from a negative is just like adding two positive numbers, but the answer will be negative (-5 - 4 = -9, not -1). Did this help at all?
2006-09-19 15:31:31 · answer #2 · answered by Saria 2 · 0⤊ 1⤋
maximum folk say Geometry is confusing. I agree, it truly is more advantageous sturdy than Algebra. It is composed of you to imagine and seek for clues which aren't any further glaring. you even ought to memorize all the theorems and practice them. Algebra is fairly repetitive, because all you should do is remedy equations truly. In Geometry, you've a lot more advantageous to memorize and performance to imagine very deeply. fantastically once you're doing proofs, you received't understand the position to commence and also you should attempt various issues out as an try before you commence to work out which theorems you could practice to remedy the topic matters.
2016-11-28 03:10:07 · answer #3 · answered by ? 3 · 0⤊ 0⤋
I didnt go through them all, but look at 29 and 30. Remember two negatives make a positive.
2006-09-19 15:30:25 · answer #4 · answered by Sean 2 · 0⤊ 1⤋
24 27 28 29 30
Was math really like that in seventh grade.
Just to give you little hope for your math future, Algebra, Geometry, trig, calculus, and stuff suck like 654,146,541 more.
2006-09-19 15:31:48 · answer #5 · answered by Like Glue 3 · 0⤊ 0⤋
The following answers are wrong:
24
27
28
29
30
2006-09-19 15:29:47 · answer #6 · answered by Bill P 5 · 0⤊ 0⤋
19) right
20) right
21) right
22) right
23) right
24) wrong
25) right
26) right
27) wrong
28) wrong
29) wrong
30) wrong
i think you should work on the longer equations you seem to have trouble with those
2006-09-19 15:22:45 · answer #7 · answered by Anonymous · 0⤊ 1⤋
#29, do over
2006-09-19 15:26:53 · answer #8 · answered by joe_on_drums 6 · 0⤊ 1⤋
Use your calculator to check your answers.
2006-09-19 15:20:10 · answer #9 · answered by La La 3 · 0⤊ 1⤋
24,27,28,29,30 are wrong
2006-09-19 15:30:33 · answer #10 · answered by chokala 1 · 0⤊ 0⤋