the test was easier than what i expected but i ended up running out of time (bc the teachers made it longer than usual)

I've already lost quite a few marks which i'm quite bummed about, considering i did start doing past papers ~1 month in advance + the questions i lost marks on were all do-able

our next math assessments are next term - but how should i bounce back from this setback? i felt really upset about this, since the test was relatively easy and hence, i should've done well

also, i find that my mental maths (eg. for basic arithmetic/fractions) is quite slow - how should i improve my speed for this? I've become quite self-conscious about losing marks on silly mistakes so i always end up double-checking my answers, which costs me quite a bit of time tbh