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
21 − 10 = ______
3 × 10 = ______
42 + 10 = ______
25 + 10 = ______
9 × 10 = ______
27 + 10 = ______
7 × 10 = ______
46 − 10 = ______
39 − 10 = ______
20 + 20 = ______
83 + 10 = ______
57 − 10 = ______
69 + 20 = ______
5 × 10 = ______
95 − 10 = ______
23 + 20 = ______
30 + 10 = ______
63 + 10 = ______
79 − 10 = ______
68 − 10 = ______
