In each of the following problems, write an addition or subtraction statement and then solve the problem. a. The hottest temperature ever recorded in a certain state was 120°F. It was recorded on July 6, 1936. Less than five months earlier, on February 15, 1936, the lowest temperature in the state's history was recorded 65°F. What is the difference between hottest and lowest temperatures? b. The temperature was "4°F and then it rose by 25°F. What is the new temperature? C. The temperature went down from 43°F to "2°F. How many degrees did the temperature fall? d. Brooke's house had a temperature of 53°F. She put the heat on and the temperature rose by 15°F. As she was still cold, Brooke lit a fire, which increased the temperature by 14°F. What was the temperature in the house then? a. The statement is (Do not simplify. Do not include the degree symbol in your answer.) The difference between the hottest and lowest temperatures is°F. (Simplify your answer.) b. The statement is (Do not simplify. Do not include the degree symbol in your answer.) The new temperature is'F. (Simplify your answer.) c. The statement is O (Do not simplify. Do not include the degree symbol in your answer) The temperature fell by °F. (Simplify your answer.) d. The statement is (Do not simplify. Do not include the degree symbol in your answer.) The temperature in the house wasF. (Simplify your answer.)

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.