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
66 + 10 = ______
67 + 10 = ______
90 − 10 = ______
83 − 10 = ______
45 + 10 = ______
69 + 10 = ______
63 + 10 = ______
47 − 10 = ______
40 + 20 = ______
69 + 20 = ______
8 × 10 = ______
55 − 10 = ______
60 + 10 = ______
4 × 10 = ______
3 × 10 = ______
61 + 10 = ______
14 + 20 = ______
86 + 10 = ______
53 + 20 = ______
76 − 10 = ______
