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
11 + 10 = ______
41 − 10 = ______
32 + 20 = ______
33 − 10 = ______
39 + 20 = ______
4 × 10 = ______
71 − 10 = ______
90 − 10 = ______
89 + 20 = ______
22 + 20 = ______
2 × 10 = ______
27 − 10 = ______
5 × 10 = ______
83 − 10 = ______
14 + 10 = ______
67 + 10 = ______
44 − 10 = ______
3 × 10 = ______
6 × 10 = ______
91 − 10 = ______
