Convert 1.45 to a fraction.

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The total number of trees in a forest was recorded as 54,001,000 in newspapers in one day.

1. What is the number of trees rounded off to the nearest tens of millions?
2. What is the number of trees in the forest written in words

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Express 11 ¼ as a decimal

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Solve the following simultaneous equation:

3a - 2b = 7

2a + b = 7

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Work out : 

2²/₅ ÷ 3¹⁵/16 X 1¹/₈

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Work out: 

2.5 X 5.1 ÷ 1.7 - 3.9 + 7.5

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A mason mixed cement, sand and gravel in the ratio 1:2:4 respectively to lay a foundation for a school’s poultry house. The mass of the sand was 900Kgs. Determine the mass of the cement and the gravel used.

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Lillian harvested:

   3r - 125     Kgs

4xr - 16 x 5

of coffee from his farm. Express the mass of coffee that he  harvested in the simplest form

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