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
56 + 10 = ______
23 + 20 = ______
64 + 10 = ______
4 × 10 = ______
26 − 10 = ______
68 − 10 = ______
2 × 10 = ______
74 − 10 = ______
9 × 10 = ______
45 + 20 = ______
23 + 10 = ______
3 × 10 = ______
21 + 10 = ______
6 × 10 = ______
27 − 10 = ______
50 − 10 = ______
67 + 20 = ______
5 × 10 = ______
54 − 10 = ______
31 − 10 = ______
