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
43 − 10 = ______
9 × 10 = ______
54 + 10 = ______
90 − 10 = ______
57 + 10 = ______
56 + 20 = ______
39 − 10 = ______
2 × 10 = ______
3 × 10 = ______
21 − 10 = ______
29 + 10 = ______
67 − 10 = ______
48 − 10 = ______
79 + 20 = ______
71 + 20 = ______
34 + 20 = ______
14 + 10 = ______
72 + 10 = ______
69 − 10 = ______
7 × 10 = ______
