https://mathsblog.co.uk/2009/07/20/maths-worksheet-counting-up-crossing-thousands/ Maths help for parents of children aged 5 to 11 Tue, 21 Jul 2009 10:22:57 +0000 hourly 1 https://wordpress.org/?v=5.4 https://mathsblog.co.uk/2009/07/20/maths-worksheet-counting-up-crossing-thousands/comment-page-1/#comment-1368 Tue, 21 Jul 2009 10:22:57 +0000 http://mathsblog.co.uk/?p=3702#comment-1368 Wow! Useful article about 4 digit subtraction.

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