☰ Contents · Mathematics

Length: centimetres and decimetres

Lessons 99–103 · 5 lessons · I.V. Repyova, Y.V. Zemlina. Mathematics Grade 1, Parts 1–4. Novda Edutainment, 2023
Answers are for parents and teachers.
1
Measure 3 things at home with a ruler and write the lengths (e.g. a spoon, a book, a phone).
2
Convert: 70 cm = ? dm; 4 dm 6 cm = ? cm; 85 cm = ? dm ? cm
3
Draw a 7 cm segment AB and a 4 cm segment CD. Which is longer, and by how much?
4
Problem: A ribbon was 45 cm long and 23 cm was cut off. How much is left?
5
Measure your family members’ hand-spans. Whose is the longest?