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
7 × 10 = ______
87 + 10 = ______
8 × 10 = ______
49 + 20 = ______
34 + 20 = ______
20 + 20 = ______
70 − 10 = ______
12 + 10 = ______
6 × 10 = ______
81 + 20 = ______
2 × 10 = ______
82 + 10 = ______
9 × 10 = ______
68 + 20 = ______
3 × 10 = ______
21 + 20 = ______
88 − 10 = ______
64 + 20 = ______
55 − 10 = ______
42 + 20 = ______
