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
40 − 10 = ______
31 − 10 = ______
67 + 20 = ______
1 × 10 = ______
8 × 10 = ______
40 + 20 = ______
59 + 10 = ______
76 − 10 = ______
69 − 10 = ______
29 + 20 = ______
70 − 10 = ______
5 × 10 = ______
32 − 10 = ______
15 + 10 = ______
57 + 10 = ______
2 × 10 = ______
7 × 10 = ______
6 × 10 = ______
45 + 10 = ______
55 − 10 = ______
