Use knowledge of rounding, number operations and inverses to estimate and check calculations

View all Year 4 Block B objectives.

 
Rounding - Crystal Crash Rounding - Crystal Crash

Throw your pickaxe at the correct crystal. This game has the following levels (taken from the new maths curricululum):

1. Round numbers up to 100 to the nearest 10 (Y2)

2. Round numbers up to 1000 to the nearest 10 (Y3)

3. Round numbers up to 10,000 to the nearest 10, 100 or 1000 (Y4)

4. Round decimals with one decimal place to the nearest whole number (Y4)

5. Round decimals with two decimal places to the nearest whole number and to one decimal place (Y5)

6.Round decimals with up to three decimal places to the nearest whole, one decimal place or two decimal places (Y6)

This game, together with all the other crystal crash games,  is available as a single iPad or Android app.

KS2 Maths Invaders KS2 Maths Invaders

Shoot the spaceship with the correct answer and dodge the incoming fire. A fun game to practise a wide range of key mathematical skills.  

There are over a hundred carefully differentiated levels linked to objectives from the new maths curriculum. The game can be used to teach: Multiplication, Addition, Reading Numbers, Subtraction, Fractions of Numbers, Roman Numerals, Rounding Numbers, Division, Converting Fractions to Decimals, Converting Fractions to Percentages, Telling the Time in Words, Recognising Multiples, Factors, Prime, Square and Cube Numbers, and Simplifying Fractions. A full list of levels is below. This game is also available as an iOS and Android app.

Rounding Rounding

Round 3-digit or 4-digit numbers to the nearest 10 or 100. Round decimals to the nearest whole number, or to 1 decimal place.  

 

 

Placing Calculations on a Number Line Placing Calculations on a Number Line

Place the answer to calculations on a number line. An enormous array of choice. Addition, subtraction, multiplication and division. Ranging from adding numbers to 10 to multiplying 4 digit numbers. Great for combining teaching calculations and approximations with developing an understanding of place value.

For more resources involving partitioning and place value click here.

For more addition and subtraction resources click here.

For more multiplication and division resources click here.