Page 39 - Start Up Mathematics_3

Th H T O TTh Th H T O TTh Th H T O
(d) 2 8 4 3 (e) 3 8 9 5 (f) 1 7 9 5

1 3 8 9 1 2 0 6 6 3 2 7

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

4. Add the following numbers.

(a) 9237, 1085, 4827 (b) 1326, 2108, 9046
(c) 2658, 2196, 1929 (d) 3013, 1580, 2607

5. Complete the boxes by writing the number given in the centre as the sum of
two numbers in different ways.

(a) (b)

5429 1270

(c) (d)

1306 2090

Addition Using Expanded Form

Th H T O Expanded form TTh Th H T O
6 3 1 4 6000 + 300 + 10 + 4 1 1 0 0 0

+ 5 8 9 7 5000 + 800 + 90 + 7 1 1 0 0

1 0 0

11000 + 1100 + 100 + 11 + 1 1

1 2 2 1 1
So, 6314 + 5897 = 12211.

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