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
68 + 10 = ______
65 + 10 = ______
89 − 10 = ______
23 + 20 = ______
3 × 10 = ______
39 − 10 = ______
72 + 20 = ______
37 − 10 = ______
72 − 10 = ______
74 + 20 = ______
17 + 10 = ______
14 + 20 = ______
8 × 10 = ______
47 − 10 = ______
26 + 20 = ______
85 − 10 = ______
4 × 10 = ______
40 + 20 = ______
6 × 10 = ______
54 + 10 = ______
