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
54 + 20 = ______
67 − 10 = ______
1 × 10 = ______
83 − 10 = ______
3 × 10 = ______
33 + 10 = ______
42 − 10 = ______
53 + 20 = ______
4 × 10 = ______
44 + 20 = ______
66 + 10 = ______
65 − 10 = ______
6 × 10 = ______
85 − 10 = ______
56 − 10 = ______
27 − 10 = ______
34 + 10 = ______
39 + 10 = ______
83 + 20 = ______
23 − 10 = ______
