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
8 × 10 = ______
78 + 20 = ______
3 × 10 = ______
55 + 20 = ______
42 + 20 = ______
43 + 20 = ______
39 − 10 = ______
23 + 10 = ______
64 + 20 = ______
9 × 10 = ______
5 × 10 = ______
64 − 10 = ______
62 + 10 = ______
42 − 10 = ______
82 − 10 = ______
70 + 10 = ______
86 + 10 = ______
25 − 10 = ______
4 × 10 = ______
61 + 20 = ______
