Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
27 + 10 = ______
77 − 10 = ______
40 − 10 = ______
30 − 10 = ______
5 × 10 = ______
82 + 10 = ______
29 − 10 = ______
79 − 10 = ______
48 + 20 = ______
4 × 10 = ______
41 + 20 = ______
67 + 10 = ______
59 − 10 = ______
11 + 20 = ______
7 × 10 = ______
29 + 10 = ______
66 + 10 = ______
6 × 10 = ______
9 × 10 = ______
59 + 10 = ______
