Estimating Numbers on a Number Line - Tablet Version

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Estimate the number the arrow is pointing to, then calculate the correct answer when you are told your error. A great game to help develop an understanding of place value, reading scales and to practise mental addition and subtraction. There are lots of levels to play; inc. 0 to 10, 0 to 100, 0 to 1000, and levels involving negative numbers and decimals.

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Game Objectives

KS2 Primary Framework:

Year 3:

Order whole numbers to at least 1000 and position them on a number line (Block A)

Read, to the nearest division and half-division, scales that are numbered or partially numbered (Block D)

Year 4:

Use positive and negative numbers in context and position them on a number line. Position one-place and two-place decimals on a number line (Block A and Block D)

Interpret intervals and divisions on partially numbered scales and record readings accurately, where appropriate to the nearest tenth of a unit (Block C)

Compare the impact of representations where scales have intervals of differing step size (Block C)

Interpret intervals and divisions on partially numbered scales and record readings accurately, where appropriate to the nearest tenth of a unit (Block D)

Year 5

Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations (Block A and Block B)

Explain what each digit represents in whole numbers and decimals with up to two places, and partition, round and order these numbers (Block A)

Interpret a reading that lies between two unnumbered divisions on a scale (Block C and Block D)

Year 6:

Use decimal notation for tenths, hundredths and thousandths; partition, round and order decimals with up to three places, and position them on the number line (Block A)