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
99 − 10 = ______
68 + 10 = ______
65 − 10 = ______
83 + 10 = ______
49 + 10 = ______
3 × 10 = ______
9 × 10 = ______
4 × 10 = ______
27 + 10 = ______
23 + 20 = ______
47 + 20 = ______
29 + 10 = ______
16 + 10 = ______
37 + 20 = ______
52 − 10 = ______
86 − 10 = ______
65 + 10 = ______
87 − 10 = ______
1 × 10 = ______
6 × 10 = ______
