The present paper describes the success, the methods (mental, informal written, standard algorithm) and the strategies of informal written arithmetic to be observed when 300 elementary students worked ...

SUBJECTS: Maths YEARS: 3–4, 5–6 Learn how to use regrouping to complete formal addition problems. Miss White demonstrates how to set up and solve the addition questions correctly, and she ...

Learn how to use column addition to add 3-digit and 2-digit numbers with this Year 4 Bitesize learning guide for KS2.

Match fun story problems with the correct addition or subtraction expression.

Build, read, write, and represent three-digit numbers using base-10 blocks and symbols.

Korean children's ability to solve addition problems with sums of 10, single-digit addition problems with sums between 10 and 18, and single-digit subtraction problems with minuends between 10 and 18 ...

SUBJECTS: Maths YEARS: 3–4, 5–6 Miss White teaches you how to complete formal addition problems without regrouping. She demonstrates how to set up and solve the addition questions correctly ...