Page 13 - prim 4 كامل

Delta Modern Language Schools
Maths Department
Prim 4 2023-2024

Unit ( 2 )L1: Properties of addition

1) Find the missing number and name the property you used :-

a) 43 + 56 = …… + 43 …….…..…….. Property

b) (2 + 13) + 56 = 2 + (13 + ………. ) …….…..…….. Property
c) 23 = 0 + ………. ………….……. Property

2) Choose the suitable property :-

a) (34 + 76) + 55 = 34 + (76 + 55)
a) additive identity b) commutative c) associative

b) 9 + 21 = 21 + 9
a) additive identity b) commutative c) associative

c) 0 + 52 = 52
a) additive identity b) commutative c) associative

3) Solve each of the following problem then name the property
you used :

a) 13 + 47 + 30 = …………………………………………………………
Property ……………

b) 12 + 19 + 8 = ………………………………. ………………………….
Property ……………

4) Sara needs to find the sum of 24, 35, 105 and 66
How can she group the addends to make it easier to add? Write the
property used in each step.
……………………………………………………………………………………………
……………………………………………………………………………………………

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