Pit Stop 2
1. Fill in the blanks
a) The sum or the product of two or more whole numbers is always ____ .
b) Whole numbers are ____ and ____ under addition and multiplication.
c) If the whole number a and b are commutative, then a + b = _____ .
d) Whole numbers can be added or multiplied in any _____ .
2. Are whole numbers closed under subtraction? Explain.
3. Are whole numbers closed under division? Explain.
4. Use commutative property to find the value of the following:
a. 435 + 768 + 565 + 232
b. 25 × 879 × 4
c. 582 + 657 + 343 + 418
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