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
27 + 10 = ______
1 × 10 = ______
52 + 20 = ______
72 − 10 = ______
69 + 20 = ______
52 + 10 = ______
2 × 10 = ______
27 − 10 = ______
7 × 10 = ______
70 + 20 = ______
17 + 10 = ______
67 − 10 = ______
91 − 10 = ______
54 − 10 = ______
24 + 20 = ______
40 + 10 = ______
66 − 10 = ______
64 + 20 = ______
60 − 10 = ______
72 + 20 = ______
