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
98 − 10 = ______
29 + 10 = ______
72 + 10 = ______
63 + 10 = ______
69 − 10 = ______
76 + 20 = ______
25 − 10 = ______
83 + 20 = ______
26 + 20 = ______
2 × 10 = ______
47 − 10 = ______
50 + 10 = ______
72 + 20 = ______
7 × 10 = ______
4 × 10 = ______
57 − 10 = ______
52 + 20 = ______
9 × 10 = ______
23 + 20 = ______
11 + 20 = ______
