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
19 + 10 = ______
42 + 20 = ______
1 × 10 = ______
8 × 10 = ______
62 + 20 = ______
86 − 10 = ______
15 + 10 = ______
11 + 10 = ______
2 × 10 = ______
70 − 10 = ______
61 − 10 = ______
58 + 10 = ______
89 + 10 = ______
88 + 10 = ______
23 + 20 = ______
6 × 10 = ______
64 − 10 = ______
43 + 20 = ______
26 + 20 = ______
5 × 10 = ______
