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
88 − 10 = ______
60 − 10 = ______
85 + 20 = ______
12 + 20 = ______
36 − 10 = ______
4 × 10 = ______
86 + 10 = ______
57 − 10 = ______
9 × 10 = ______
7 × 10 = ______
37 − 10 = ______
62 + 10 = ______
84 − 10 = ______
57 + 10 = ______
86 + 20 = ______
2 × 10 = ______
21 + 20 = ______
38 + 20 = ______
72 + 10 = ______
1 × 10 = ______
