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
19 + 10 = ______
52 + 20 = ______
29 − 10 = ______
86 − 10 = ______
3 × 10 = ______
1 × 10 = ______
18 + 10 = ______
20 + 20 = ______
56 + 10 = ______
91 − 10 = ______
43 − 10 = ______
81 + 20 = ______
23 + 20 = ______
12 + 20 = ______
23 + 10 = ______
2 × 10 = ______
31 + 20 = ______
73 − 10 = ______
55 + 20 = ______
63 + 20 = ______
