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
23 + 10 = ______
70 + 20 = ______
1 × 10 = ______
47 − 10 = ______
4 × 10 = ______
3 × 10 = ______
57 − 10 = ______
28 − 10 = ______
70 + 10 = ______
55 + 10 = ______
71 + 10 = ______
62 + 20 = ______
42 + 10 = ______
87 + 10 = ______
6 × 10 = ______
68 − 10 = ______
98 − 10 = ______
26 − 10 = ______
84 + 20 = ______
89 + 20 = ______
