Worksheet: Using Properties of Addition to Add Decimals

In this worksheet, we will practice using mental strategies including applying the commutative and associative properties to add three or more decimal numbers with up to two decimal places.

Q1:

Find the missing number: 880+6,207=+880.

Q2:

1 8 4 + 7 6 7 = 9 5 1 . What is 767+184?

Q3:

Evaluate 27+29+73 using the commutative and associative properties.

Q4:

Matthew saved 915 piastres in the first month, 940 piastres in the second month, and 985 piastres in the third month. How much did he save in total?

Q5:

Noah saved 815 piastres in the first month, 785 piastres in the second month, and 825 piastres in the third month. How much did he save in total?

Q6:

3 4 4 + 5 5 3 = 5 5 3 + .

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