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
54 − 10 = ______
55 − 10 = ______
51 + 20 = ______
51 − 10 = ______
67 + 10 = ______
1 × 10 = ______
85 − 10 = ______
9 × 10 = ______
2 × 10 = ______
19 + 10 = ______
5 × 10 = ______
59 − 10 = ______
21 − 10 = ______
4 × 10 = ______
62 − 10 = ______
89 − 10 = ______
45 − 10 = ______
55 + 20 = ______
36 + 20 = ______
6 × 10 = ______
