ISBN: 9780721434490 - 30 second challenge: super quick mental maths (4 Ergebnisse)

spiral_bound. Zustand: Very Good. Most items will be dispatched the same or the next working day. A copy that has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

Paperback. Zustand: Fair. A readable copy of the book which may include some defects such as highlighting and notes. Cover and pages may be creased and show discolouration.

Paperback. Zustand: Very Good. As a result of media and parental attention to the need for improvement of core skills, this is a fast-paced mental arithmetic book. It is a sequel to the "Human Calculator" books 1 and 2, and is intended to help children to excel at adding, taking away, multiplying and dividing in their heads. In these books, children will have met new mathematical ideas, such as square roots, square numbers, fractions, multiplying by 10 and dividing by 100, and percentages. This book extends these number skills, enabling children to perform complex mathematical gymnastics in their heads. They will need scrap paper, a watch that can count in seconds and a calculator. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.…

Softcover. Zustand: Bon. Petite(s) trace(s) de pliure sur la couverture. Edition 1999. Tome 5. Ammareal reverse jusqu'à 15% du prix net de cet article à des organisations caritatives. ENGLISH DESCRIPTION Book Condition: Used, Good. Slightly creased cover. Edition 1999. Volume 5. Ammareal gives back up to 15% of this item's net price to charity organizations.…