Subtraction Math Word Problems

Subtraction is a process of finding the difference between two numbers. In subtracting one number from another, arrange the numbers according to the place values and carry out the operation column by column from right to left.     When two or more numbers are to be subtracted successively, it must be carried out in steps subtracting two numbers at a time. There are few steps involved in order to solve subtraction math word problems. Solving Subtraction Math Word Problems Step 1 Read the math word problem. Step 2 Understand the problem – by asking the questions using Polya’s 4 Step Model. For example: What is given? What is asked for? What operation are you going to use? What operation is needed?   Step 3 Devise a plan For example: Adding the numbers first, then do the subtraction.   Step 4 Carry out the plan or calculation.   Step 5 Check the solution  Example A factory produced 250 400 of calculators in January. In February, it produced 66 000 less than in January. Find the number of calculators produced by the factory in February.   Step 1: Read the problem. Step 2: Understand the problem  Given: January -250 400 of calculators were produced. February – 66 000 less than January were produced. Find: The number of calculators produced in February.   Step 3: Devise a plan Use subtraction (-)   Step 4: Carry out the plan 250 400 – 66 000 = ? 250 000 - 66 000  184 400 184 400 of calculators were produced in February. Step 5: Check the solution Subtract the number of calculators produced in February from the number of calculators produced in January. 250 000 - 184 400    66 000 PS: Try to understand the subtraction math word problems by applying Polya’ 4 Step Model which can find in next few posts.

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