# Multiply by tens word problems

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Multiply by tens word problems
Description
Exercise Name: Multiply by tens word problems
Math Missions: 3rd grade (U.S.) Math Mission
Types of Problems: 2

The first instance of Multiply by tens word problems is under the 3rd grade (U.S.) Math Mission. This exercise uses word problems to help users better understand in context how multiplying by ten works.

## Types of Problems

There are two types of problems in this exercise:

1. Break the multiply problem up: This problem illustrates step-by-step the mental process of the multiply by ten strategy referred to in Multiply by tens. Specifically, ignore the zero, multiply the single digit numbers, reinsert the zero.
2. Solve a multiply by ten word problem: This problem has a rectangular visual aid to assist with solving a word problem involving a multiplication by a multiple of ten.

## Strategies

This exercise is easy to get accuracy badges and medium difficult to get the speed badges.

1. On the first problem type the four answers always follow the same pattern which users can discover if they look closely at the process they are following. The first two answers are the same single digit number from the second number in the multiplication. The second two answers are the same number which is the product of the two single digit numbers. The third number is that product with a zero put on the end.
2. Symbol summary of previous tip, if users are doing ${a\times b}$ the answers are ${b}$, ${b}$, ${ab}$, ${ab}$, ${ab}$.
3. On the second problem type, the picture does not assist any more than the word problem does. It is not necessary to wait for the picture if users can solve with the words.

## Real-life Applications

1. Multiplication is needed and used by mechanics for repairing cars by multiplying when they overhaul the engine, measure the pistons or just to put in a new gearbox or engine.
2. By learning multiplication and memorizing the times tables, the user provides themselves with essential building blocks to do higher learning math, like division, fractions and even algebra.
3. Multiplication is necessary for a career in the stock market.