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
63 + 10 = ______
12 + 20 = ______
64 − 10 = ______
23 + 10 = ______
85 + 10 = ______
2 × 10 = ______
17 + 10 = ______
83 − 10 = ______
31 − 10 = ______
85 + 20 = ______
1 × 10 = ______
59 − 10 = ______
51 + 10 = ______
3 × 10 = ______
21 + 20 = ______
11 + 10 = ______
74 + 20 = ______
8 × 10 = ______
41 + 20 = ______
9 × 10 = ______
