Addition and Subtraction

Evaluate $35000+45000$35000+45000 by doing the following.

a

Fill in the box with the missing number.

$35000=30000+\editable{}$35000=30000+

b

Fill in the box with the missing number.

$45000=\editable{}+5000$45000=+5000

c

Using the results from the previous parts, evaluate $35000+45000$35000+45000.

Easy

Approx a minute

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Use a range of additive and simple multiplicative strategies with whole numbers, fractions, decimals, and percentages.

Record and interpret additive and simple multiplicative strategies, using words, diagrams, and symbols, with an understanding of equality