PDF chapter test TRY NOW
1. \(75 + (-25) =\)
2. \(171 +\) \(= 0\)
3. \([(-3) + (-12)] + (-77) =\) \(+ [[-12) +(-77)]\)
4. \((-42) + [\) \(+ (-23)] =\) \([\) \(+ 15]\) \(+\)
Register for free to see more content
Register for free to see more content