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
59 − 10 = ______
89 + 20 = ______
57 + 10 = ______
29 − 10 = ______
17 + 20 = ______
30 + 20 = ______
4 × 10 = ______
69 − 10 = ______
51 + 10 = ______
86 + 20 = ______
15 + 20 = ______
55 − 10 = ______
13 + 20 = ______
44 + 20 = ______
32 + 10 = ______
50 − 10 = ______
1 × 10 = ______
5 × 10 = ______
72 − 10 = ______
8 × 10 = ______
