3rd Grade Interactive Math Skill Builders
Rounding and Estimating - CCSS 3.NBT.A.1
Links verified on 12/23/2015
Math - Practice rounding numbers. For each correct answer a basket [basketball]
Estimator - Compare the two sets of objects and answer the problem being
asked. Less than or Greater than exercise.
Sizes of Objects - Guess which length or distance applies to the object.
by Rounding - Addition with regrouping.
by Rounding - Subtraction with regrouping.
and Rounding Decimals - Try answering the 10 problems. If you get at
least 8 correct on your first attempt, then you're ready to move on. If
not, review the lesson and examples.
Sum - No hints or clues given.
Valley Golf - Complete the course using estimation
skills in as few strokes as possible.
- Practice estimation skills by determining the number of objects, length,
- Guess the Number - Developing skills in halving and estimation.
Run Derby Math - You don't have time to add, just estimate the correct
answer. [addition, subtraction, or multiplication]
- Let's Go Shopping - Estimate by rounding to the nearest dollar
as they shop.
- Maximum Capacity - Bring as many gorillas as possible to the
eighth floor for the annual Gorilla's Ball at the Jungle Hotel! The only
problem is, the doors to the ball close in three minutes, and there are
still hundreds of anxious gorillas waiting. Check the weight capacity at
the top of the elevator. It changes with each trip. Drag the gorillas into
the elevator. Drag as many as you can without exceeding the weight capacity.
- More or Less Estimator - Provides a quantity and you have to
estimate whether the set of objects are more or less than the number given.
3-Digit Whole Number to Nearest Ten - Online quiz that is self checking.
3-Digit Whole Number to Nearest Hundred - Online quiz that is self checking.
2-Digit Whole Number to Nearest Ten - Online quiz that is self checking.
- Round About - Estimate by rounding.
- Round the Decimal
to the Nearest Whole Number - Matching, flashcards, or concentration.
Off - Three levels are available in this game from BBC Education.
to nearest ten
to nearest hundred
to nearest thousand
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