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
45 + 10 = ______
44 + 10 = ______
4 × 10 = ______
20 + 20 = ______
56 − 10 = ______
83 + 10 = ______
25 + 10 = ______
33 − 10 = ______
81 + 10 = ______
53 − 10 = ______
17 + 20 = ______
19 + 10 = ______
3 × 10 = ______
57 − 10 = ______
1 × 10 = ______
63 − 10 = ______
66 − 10 = ______
86 − 10 = ______
89 − 10 = ______
39 + 20 = ______
