Question

2) Find the estimated difference by rounding off to nearest tens. a) 63-42 b) 78-43 C) 96-53 c d) 54-33​

Answer 1

Answer:

To compare ratios, you need to have a common second number. By multiplying each ratio by the second number of the other ratio, you can determine if they are equivalent. Multiply both numbers in the first ratio by the second number of th

Answer 2

Answer:

Step-by-step explanation:

a) 63 = 60( rounded off to nearest tens) & 42 = 40( rounded off to nearest tens)

i.e 60 - 40 = 20

b) 78 = 80( rounded off to nearest tens) & 43 = 40( rounded off to nearest tens)

i.e 80 - 40 = 40

c) 96 = 100( rounded off to nearest tens) & 53 = 50( rounded off to nearest tens)

i.e 100 - 50 = 50

d) 54 = 50( rounded off to nearest tens) & 33 = 30( rounded off to nearest tens)

i.e 50 - 30 = 20

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