41 slides. Visual presentation of adding multiple 2-digit numbers and 3-digit numbers. 4 lessons. Regrouping included; regrouped digits are above the answer (v2 available; regrouped digits above the top numeral). Interactive PowerPoint Think Bubble Math 306
ACMNA054
Recognise and explain the connection between addition and subtraction
ACMNA053
Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems
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