Page 96 - Start Up Mathematics_1
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7 Add using the expanded form.
T O Expanded form T O
(a)
4 6 +
+ 3 8 + + +
+
So, 46 + 38 = .
H T O Expanded form H T O
(b) 2 3 8 + +
+ 4 7 9 + + +
+ + +
So, 238 + 479 = .
8 Find the missing digits and check your answer.
H T O H T O H T O
(a) (b) (c)
6 7 ? 9 2 9 4 ? 6
– ? 2 8 – 4 ? ? – ? 8 ?
4 ? 1 ? 9 3 1 5 0
Checking Checking Checking
H T O H T O H T O
+ + +
88
