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MENTAL MATHS-6

A. Add orally:

(a) 30 + 40 = (b) 20 + 60 =

(c) 40 + 50 = (d) 300 + 500 =

(e) 200 + 300 = (f) 400 + 400 =

(g) 2000 + 5000 = (h) 5000 + 3000 =

(i) 257 + 10 = (j) 1234 + 10 =

(k) 2165 + 10 = (l) 256 + 30 =

(k) 2165 + 10 = (l) 256 + 30 =

(m) 1236 + 100 = (n) 1345 + 500 =

B. Find the sum:

(a) Th H T O (b) Th H T O (c) Th H T O

4 3 6 2 8 1 3 0 2 7 5 3

+ 2 7 9 9 + 1 2 1 0 + 3 2 5 7

(d) Th H T O (e) Th H T O (f) Th H T O

1 4 6 8 2 6 3 2 6 3 7 5
+ 4 1 8 6 + 4 9 3 8 + 2 4 1 6

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Addition
Mathematics-3