Basic Arithmetic Concepts and Operations

This video tutorial covers module 00102 of the NCCR Core Curriculum, focusing on construction math. It includes an introduction to whole numbers, their place values, and detailed steps for performing addition, subtraction, multiplication, and division. The tutorial also explains the order of operations and provides review questions to reinforce learning.

In the number 73,854, which digit is in the ten-thousands place?

• 7

• 3

• 5

• 8

What is the first step in adding whole numbers?

• Align the numbers horizontally

• Subtract the smaller number

• Align the numbers vertically

• Start from the left column

When subtracting, what should you do if the bottom number is larger than the top number in a column?

• Subtract the top number from the bottom

• Ignore the difference

• Borrow one from the next column

• Add one to the top number

What is the first step in multiplying whole numbers?

• Divide the numbers

• Start from the left

• Align the digits

• Align the numbers horizontally

In division, what does the remainder represent?

• The divisor

• The dividend

• A fraction or part of a whole

• A whole number

What is the correct order of operations in a mathematical expression?

• Subtraction, Addition, Division, Multiplication

• Division, Multiplication, Addition, Subtraction

• Multiplication, Division, Addition, Subtraction

• Addition, Subtraction, Multiplication, Division

What is the perimeter of a rectangular room with two walls measuring 12 ft and two walls measuring 23 ft?

• 35 ft

• 70 ft

• 24 ft

• 46 ft

How many concrete blocks are needed to build a wall 2 ft high and 10 ft long, if each block is 6 in high, 6 in wide, and 12 in long?

• 40 blocks

• 80 blocks

• 10 blocks

• 20 blocks

If a training requires 100 special fasteners and they come in bags of 15, how many bags are needed?

• 7 bags

• 5 bags

• 6 bags

• 8 bags

What is the total cost of materials if a contractor estimates $700 for lumber, $520 for roofing shingles, and $230 for hardware?

• $1,450

• $1,500

• $1,550

• $1,350