MATHs by Rita and Jaime

This week we have been learning a new strategy (it's pretty tricky ) say the question was 21+ something = 34. we would split it into groups ... next we take we take the first number (which ours is 21 ) And we take our 21 and + 9=30.  We take it up to 30 because that's a tidy number.  Tidy numbers end in 0)  +4 that we get from our 34.