☰ Contents · Mathematics

Subtracting natural numbers, numerical and letter expressions

Lessons 7–8 · 2 lessons · B.Q. Khaydarov. Mathematics Grade 5, Parts 1–2. Revised and expanded third edition. Tashkent, 2020
Answers are for parents and teachers.
1
Compute 21 507 − 8 649 and check by addition.
2
Find the distance MK between M(15) and K(64).
3
Find the value of 24 × 3 + 90 : 6.
4
Find the value of (45 − c) + (c + 12) for c = 7.
5
A basket had n apples and 8 were sold. Write the remaining apples as a letter expression and find it for n = 30.