You must be able to recognize how many significant figures a number has in order to do multiplicative operations. Select how many significant figures each of the numbers displayed in questions I-4 has. Questions I-4 share the same set of answers: A) 1 B) 2 C) 3 D) 4 E) 5 F) 6 G) 7 I) 1203.456 2) 200 3) 20.60 4) 004.00 For each number displayed in questions 5-8, select which place the last (farthest right) significant figure is in. This skill is necessary for doing additive operations. For example, in the number 1203.456: I is in the thousands place 2 is in the hundreds place O is in the tens place 3 is in the ones place 4 is in the tenths place 5 is in the hundredths place 6 is in the thousandths place Questions 5-8 share the same set of answers: A) thousandths B) hundredths

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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.