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
53 + 10 = ______
40 − 10 = ______
30 − 10 = ______
62 + 20 = ______
34 + 20 = ______
4 × 10 = ______
67 − 10 = ______
9 × 10 = ______
6 × 10 = ______
15 + 10 = ______
51 + 20 = ______
66 − 10 = ______
29 − 10 = ______
91 − 10 = ______
1 × 10 = ______
21 + 20 = ______
14 + 20 = ______
69 + 10 = ______
36 − 10 = ______
88 + 10 = ______
