3. a) 780 + 155 = b) 854 + 456 = c) 651 + 159 + 147 = d) 515 + 49 + 5 = + + + 4.
a) HTU 453 159
+ 111
b) HTU 461 155
+ 337
c) HTU 202 715
+ 34
d) HTU 435 78 9
+ +
5. Can you make every row and column add up to the magic number? Magic number = 90
18 30
12
6. a) 698 + 78 = ? Estimate =
Work out the answer below.
b) 420 + 219 = ? Estimate =
Work out the answer below.
7. Magic number = 375 130 120 115 6
8. St Brigid’s School was putting on a musical production of Jack and the Beanstalk. There were 34 cast members, 58 chorus singers, 13 more dancers than cast members and 9 backstage crew. How many people were involved in the production altogether?
Giggler
Q: How does a cow do sums? A: She adds one number to the udder!
Recap • I can add big numbers together.
• I know how to regroup, before adding. • I know how to estimate, before adding. • I can use my addition skills to solve word problems.