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
60 − 10 = ______
17 + 20 = ______
1 × 10 = ______
5 × 10 = ______
63 + 20 = ______
9 × 10 = ______
55 − 10 = ______
56 + 10 = ______
81 + 10 = ______
74 + 20 = ______
92 − 10 = ______
8 × 10 = ______
3 × 10 = ______
23 − 10 = ______
14 + 20 = ______
18 + 20 = ______
42 + 10 = ______
27 − 10 = ______
15 + 10 = ______
62 + 20 = ______
