Page 34 - Start Up Mathematics_3

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Addition

Let’s Recall ...

Find the sum.

H T O H T O H T O H T O
(a) (b) (c) (d)
7 8 2 2 6 9 8 3 8 3 8
+ 4 6 + 0 2 6 2 0 2 9

+ 4 5 + 7 5

(e) T O Expanded form T O
6 7 +

+ 2 5 +
+

+

So, 67 + 25 = .

(f) H T O Expanded form H T O

5 1 6 + +

+ 2 4 5
+ +
+
+ +

So, 516 + 245 = .

(g) H T O Expanded form H T O

1 2 4 + +

3 0 1
+ +
+ 4 5 2 +
+ +

+ +

So, 124 + 301 + 452 = .

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