Mastering Multiplication: Grouping Numbers Worksheet for 14-Year-Olds

Instructions

In this worksheet, you will practice grouping numbers to make multiplication easier. You will use different strategies to multiply the numbers and solve the problems below.

Part 1: Grouping Numbers

Group the numbers in each multiplication problem to make the calculation easier. Show your work for each step.

1. Calculate: 6 x 4 x 5
   • Group the numbers: ____ x ____ x ____
   • Calculate the first part: ____
   • Now multiply the result by the last number: ____
   • Final answer: ____
2. Calculate: 2 x 8 x 10
   • Group the numbers: ____ x ____ x ____
   • Calculate the first part: ____
   • Now multiply the result by the last number: ____
   • Final answer: ____
3. Calculate: 3 x 7 x 6
   • Group the numbers: ____ x ____ x ____
   • Calculate the first part: ____
   • Now multiply the result by the last number: ____
   • Final answer: ____

Part 2: Word Problems

Read the following word problems and determine how to group the numbers for easier multiplication.

1. Sarah has 3 baskets of apples. Each basket contains 4 apples, and she has 2 friends helping her. How many apples do they have altogether?
   • Group the numbers: ____ x ____ x ____
   • Final answer: ____
2. A teacher has 5 packs of pencils. Each pack has 12 pencils, and there are 2 teachers. How many pencils do they have in total?
   • Group the numbers: ____ x ____ x ____
   • Final answer: ____

Extra Practice

Try these multiplication facts by grouping the numbers:

1. 9 x 6 x 2 = ____
2. 7 x 3 x 5 = ____
3. 10 x 4 x 3 = ____

Reflection

Write down what you learned about grouping numbers and how it can help you with multiplication.