Showing Results for estimating to subtract

Many students cringe when they see a subtraction problem with multiple zeros. The “Subtract One” strategy in this lesson involves reducing the top number by one to turn the 0 digits into 9’s and then adding the one back in at the end.

Teach your students to add and subtract fractions with like denominators using a strategy that works for both operations: converting mixed numbers into improper fractions and back again!

Teach your students to subtract mixed numbers with like denominators using the strategy of decomposition. This strategy helps students to manipulate and break down numbers to help them solve tricky subtraction problems.

Can you break a ten? An everyday exchange of money can help students think about regrouping to subtract. Students will use bundled popsicle sticks to see how values grouped into tens can be regrouped into ones to allow us to subtract.

Help your students subtract with confidence by sharing two different strategies. Use this lesson to build on students’ understanding of subtraction and to evaluate this key skill.

This lesson introduces students to measuring and estimating liquid volume, using liters (l) as the standard unit of measurement.

Teach your students to add and subtract time using number lines. Your class will be gladly moving backwards and forward to the minute solving for related word problems.

Start your students on subtracting three-digit numbers with this lesson that breaks the problems down by place values!

Get your students explaining estimations and measurements of liquid volumes and masses of objects! Use this lesson independently or alongside Estimating Measurements of Mass and Volume Using Metric Units.

Students will become more familiar with common metric measurements by matching everyday objects with the metric mass and volume units they would use to measure them.

Master rounding and estimating skills by having students challenge their classmates in the Make a Big Difference game. Roll three dice two times to arrive at two three-digit numbers. The largest difference wins!

In this lesson, students will practice explaining the process of subtracting numbers up to 1,000 using base-ten blocks and peer feedback. Use this lesson on its own or as support to the lesson Fluently Subtracting within 1,000.

It's as easy as one, two, three...four! Introduce your students to subtracting decimals in the tenth and hundredth place using a four-step process.

Empower students to think like mathematicians by having them create word problems related to subtracting mixed numbers. Use this lesson on its own or as support to the lesson Subtracting Mixed Numbers Using the Decomposition Strategy.

This lesson is designed for fourth graders to practice their skills with the order of operations along with multiplying fractions and adding or subtracting decimals.

Finding the least common multiple is an essential skill for comparing, adding, and subtracting fractions! This lesson introduces students to this concept in an interactive way.

In this lesson, students will practice strategies of subtracting time and apply them to real life scenarios. Also, use this game with the lesson that teaches addition of elapsed time called Beyond Just Addition.

Don't throw away all of those extra copies of your book order forms! They make great springboards for math lessons. This lesson integrates them into activities designed to help young learners with money math.

Empower your students with the opportunity to design decimal subtraction problems with a given difference (answer). Use this lesson on its own or as support for the lesson Step By Step Decimal Subtraction.

Go to any length to test your students' understanding of perimeter calculations. Students will use their understanding of the perimeter of rectangular shapes to create rectangles that have different side measurements but equal perimeters.

Students will have a blast deepening their understanding of the order of operations, with this lesson which incorporates an interactive team game.

Are your students hungry for math? In this lesson, students pretend to order their favorite takeout foods with their classmates all while practicing rounding decimals so that they know what to expect when the bill comes!

Help students solve fraction word problems with a graphic organizer! This lesson addresses Common Core standards while teaching useful skills for standardized test taking.

This lesson helps students review rounding to the nearest hundred. Your students will practice rounding using manipulatives.

With this pastry themed lesson, your students will apply addition strategies to solve two-step, three-digit addition word problems. Finding the solutions will be sweet!

Get your students comfortable with discussing multiple strategies to solve subtraction problems with this lesson on two- and three-digit subtraction. It may be taught independently or as support for the lesson Subtraction with Regrouping.

Your students will feel confident in their rounding abilities after this lesson that has them learn how to round numbers to the nearest ten both individually and with a group.

Let your students decorate their own room with this lesson that has them use area to place furniture in a room.

Put the FUN! in function tables with this engaging, interactive lesson that will have your students generating their own patterns and tables.

Teach your students a vital life skill with this lesson on telling time to the nearest minute! Students will be hands on changing the times on their own clocks and get plenty of practice reading times both with the class and individually.