1. 90.4 Explanation: 423+682 = 1105(adding the same sign values) -563-90= -653 Subtracting both gives : 1105-653 = 452 on dividing by 5 , it gives 90.4

    90.4
    Explanation:
    423+682 = 1105(adding the same sign values)
    -563-90= -653
    Subtracting both gives : 1105-653 = 452
    on dividing by 5 , it gives 90.4

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  2. 1+9 = 10 Explanation: adding 1 and 9 will give 10

    1+9 = 10
    Explanation:
    adding 1 and 9 will give 10

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