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
7 × 10 = ______
6 × 10 = ______
2 × 10 = ______
78 + 10 = ______
89 + 20 = ______
88 + 10 = ______
31 + 10 = ______
70 + 20 = ______
83 − 10 = ______
69 − 10 = ______
68 + 20 = ______
36 − 10 = ______
61 − 10 = ______
57 + 20 = ______
44 − 10 = ______
4 × 10 = ______
34 + 10 = ______
5 × 10 = ______
19 + 20 = ______
62 + 20 = ______
